What can teachers do to alleviate statistics anxiety in their students? To explore this question, statistics anxiety for students in two classes was compared. In one class, the instructor lectured in a formal manner, including dressing formally. In the other, the instructor was less formal, dressed informally, was more personal, used humor, and called on students by their first names. Anxiety was measured using a questionnaire. Higher scores indicate a greater level of anxiety. The mean anxiety score for students in the formal lecture class was 25.40 . In the informal class, the mean was 20.41 . Classify 25.40 and 20.41 as parameters or statistics.

Answer:

a

[tex]\% E = 0.9 \%[/tex]

b

[tex]\%E_1 = 10.1 \%[/tex]

Step-by-step explanation:

From the question we are told that

The probability that an employees suffered lost-time accidents last year is [tex]P(e) = 0.06[/tex]

The probability that an employees suffered lost-time accident during the current year is

[tex]P(c) = 0.05[/tex]

The probability that an employee will suffer lost time during the current year given that the employee suffered lost time last year is

[tex]P(c | e) = 0.15[/tex]

Generally the probability that an employee will experience lost time in both year is mathematically represented as

[tex]P(c \ n \ e) = P(e) * P(c \ |\ e)[/tex]

=> [tex]P(c \ n \ e) = 0.06* 0.15[/tex]

=> [tex]P(c \ n \ e) = 0.009[/tex]

Generally the percentage of employees that will experience lost time in both year is mathematically represented as

[tex]\% E = P(e \ n \ c ) * 100[/tex]

=> [tex]\% E = 0.009 * 100[/tex]

=> [tex]\% E = 0.9 \%[/tex]

Generally the probability that an employee will experience at least one lost time accident over the two-year period is mathematically represented as

[tex]P(e \ u \ c) = P(e) + P(c) - P(e \ n \ c)[/tex]

=> [tex]P(e \ u \ c) = 0.06 + 0.05 - 0.009[/tex]

=> [tex]P(e \ u \ c) = 0.101[/tex]

Generally the percentage of the employees who will suffer at least one lost-time accident over the two-year period is mathematically represented as

[tex]\%E_1 = P(e \ u \ c) * 100[/tex]

=> [tex]\%E_1 = 0.101* 100[/tex]

=> [tex]\%E_1 = 10.1 \%[/tex]

Answer:

Did you mean to ask how many holes can the drill drill in 25 minutes, then the answer is 50

Answer:

50

Step-by-step explanation:

Since the drilling machine can drill 12 holes in 6 minutes we divide to get 2. Next you would times 25 by 2 which is 50. I hope this helps :)

Answer:

hi there

1. 9x - 3y = 3

6xy = 3

xy = 3/6

xy = 2

Step-by-step explanation:

hope u understand

Answer:

0.073m

Step-by-step explanation:

here’s the answer lol

Answer:

-0.0789 m

Step-by-step explanation:

Recall that the y-component comes associated with the sin(18.4) through the following trigonometric relationship:

y = 0.250 sin(-18.4) ≈ -0.0789 m

Notice it is negative since it is below the x-axis.

Answer:

10

Step-by-step explanation:

Solve for p:

p - 7 = 3

Hint: | Isolate terms with p to the left hand side.

Add 7 to both sides:

p + (7 - 7) = 7 + 3

Hint: | Look for the difference of two identical terms.

7 - 7 = 0:

p = 3 + 7

Hint: | Evaluate 3 + 7.

3 + 7 = 10:

Answer: p = 10

Hey there!☺

[tex]Explanation:[/tex]

Solve for p | [tex]-7+p=3[/tex]

In step 1, we will simplify both sides of the equation:

[tex]p-7=3[/tex]

In step 2, we will add 7 to both sides:

[tex]p-7+7=3+7\\p=10[/tex]

p=10 is your answer.

Hope this helps!☺

Step-by-step explanation:

50=average

then to find how much she spent we would do

$21.50+$10.58= 32.08

and then

$5.88+$7.51= 13.39

and then we add them both together

$32.08+13.39= 45.49

Answer:

after 9 years it would be 36,972.5

Answer:

0.75-0.5= 0.25 I think

Step-by-step explanation:

Answer:

[tex]\frac{7}{9}[/tex]

Step-by-step explanation:

If you add a number that is negative, you are basically subtracting it.

This means that

[tex]\frac{8}{9}+\left(-\frac{1}{9}\right)=\frac{8}{9}-\frac{1}{9}[/tex]

Since they both have the same denominator, you can easily subtract the fractions: [tex]\frac{8-1}{9}=\frac{7}{9}[/tex]

c60

$0.6

Hi there !

169ms ............. $16.90

6ms................... $ x

x = 6×$16.90/169

= 6×c1690/169

= c10140/169

= c60

= $0.6

Good luck !

It cost Ayden $0.6 for 6 text messages.

Proportion is a mathematical comparison between two numbers. According to proportion, if two sets of given numbers are increasing or decreasing in the same ratio, then the ratios are said to be directly proportional to each other.

Given that, It cost Ayden $16.90 to send 169 text messages. we need to find how much would it cost to send 6 text messages,

We will set a proportion for this question,

Let it cost x for 6 texts,

therefore,

16.9 / 169 = x / 6

0.1 = x/6

x = 0.6

Hence, it cost Ayden $0.6 for 6 text messages.

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Answer:

20%

Step-by-step explanation:

just took test plz mark as brainliest

Answer:yes its 20%

Step-by-step explanation:i did the test and the other guy was right!tysm

Answer:

x=8

Step-by-step explanation:

3x-4=2x+4

Subtract 2x from each side using the subtraction property of equality

We want to get all the x 's on one side

3x-2x-4=2x-2x+4

x-4 = 4

Add 4 to each side using the addition property of equality

We want all the constants on one side

x-4+4= 4+4

x= 8

Answer:

x=8

Step-by-step explanation:

3x-4=2x+4

Subtract 2x on both sides

Your equation will look like

x-4=4

Add the four on both sides

Since x equals one you don't divide x

your answer will be x=8

Answer:

7/18

Step-by-step explanation:

²[tex]\frac{4}{7}[/tex]=((2*7)+4)/7

2*7=14

14+4=18

18/7⇒7/18

Answer:

1 - Paco

2 - Tim

3 - Jenny

4 - Maria

Step-by-step explanation:

Tim will not be in positions 1 or 4, as 1 and 4 represent the ends of the line.  Jenny cannot be in positions 1 or 4, as she is between two people.  Paco will not be in positions 2 or 4, as he is only in an odd numbered position. Maria will be in position 4, as none of the other three can be at position 4.  Paco will be in position 1, as Tim and Jenny cannot be at position 1.  The two positions left are 2 and 3. We'll assume that 1 represents the front of the line. Since Tim has to be in front of Jenny, he will take the position with the lower number, which is 2. This leaves Jenny with 3.

Answer:

the answer is :

x^2 +8x-33

Answer:

Daniel Boone

Step-by-step explanation:

Daniel Boone and a troop of axmen blazed a trail from Virginia through Cumberland Gap and into central Kentucky for the Transylvania company.

Answer:

Daniel boone

Step-by-step explanation:

BC yesssdp

Answer:

i think 150

Step-by-step explanation:

sorry if its wrong im just trying to help

Based on the scatterplot, The best prediction of the number of baseballs that will be used if 275 pitches are thrown will be 150. Option A is correct.

Scatter plots are graphs that represent individual points of data and are labeled with quantitative values on both coordinate axes, meaning that there is only one projection on the x-axis and one projection on the y-axis for each point.

Given this information, the scatterplot below depicts the correlation between the number of baseballs used in 14 games and the number of pitches thrown in these games.

Making forecasts about the future is possible with a scatter plot. You can draw a line, referred to as a best-fit line, that is near the majority of the data points in order to aid in the forecasts. A line should be drawn with around half of the data points above and half below it.

Thus, based on the scatterplot, The best prediction of the number of baseballs that will be used if 275 pitches are thrown will be 150. Option A is correct.

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Answer:

8 hours

Step-by-step explanation:

4 bunnies...... 10 hours

5 bunnies....... X hours

X=4 ×10 :5

X=40 :5

X=8 hours

[tex]12.5[/tex] hours

The unitary method is a methodology for solving problems that involves first determining the value of a single unit and then multiplying that value by the required value.

Time taken by [tex]4[/tex] bunnies to eat crops [tex]=10[/tex] hours

Time taken by [tex]1[/tex] bunny to eat crops [tex]=\frac{10}{4}[/tex] hours

Time taken by [tex]5[/tex] bunnies to eat crops [tex]=\frac{10}{4}\times 5[/tex]

                                                              [tex]=12.5[/tex] hours

So, [tex]5[/tex] bunnies eat the same crops in [tex]\boldsymbol{12.5}[/tex] hours.

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Answer:

The number line roughly tells us that 2 pounds is equal to 1 kilogram. 17 pounds would be 17/2 so about 8.5 kilograms.

Answer:

Step-by-step explanation:

54.65

A rectangular number is a that is generated by two numbers successive. It had four faces and four angles. For Example Cartons, banknotes, and mobile phone boxes.

Given:

[tex]\to \bold{x= 50 \frac{5}{8}} \\\\ \to \bold{y= 30 \frac{2}{9}}\\\\[/tex]

Fencing costs[tex]\bold{= \$25.80 / yard}[/tex]

To find:

total Cost=?

Solution:

[tex]\to \bold{x= 50 \frac{5}{8}=\frac{405}{8} } \\\\ \to \bold{y= 30 \frac{2}{9}= \frac{272}{9}}\\\\[/tex]

[tex]\to \text{Area of rectangular= length\ (x)} \times \text{width\ (y)}[/tex]

                                   [tex]\bold{= \frac{405}{8} \times \frac{272}{9}}\\\\\bold{= 50.625 \times 30.222}\\\\\bold{= 1529.98875 \approx 1530}\\\\[/tex]

Calculating the Fencing costs:

[tex]= \text{Fencing costs} \times \text{area of rectangular}[/tex]

[tex]=\bold{ \$ 25.80 \times 1530}\\\\=\bold{\$39474}[/tex]

So, the final answer is  "$39,474".

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Answer:

4+3√2y = 6

3√2y = -4+6

3√2y = 2

(3√2y)2 = (2)2

18y = 4

Add 4 to both sides

18y = 4

Divide both sides by 18

A possible solution is :

y = (2/9)

Answer:

y=2/9

Step-by-step explanation:

4+3√2y=6

3√2y+4=6

Step 1: Add -4 to both sides.

3√2y+4+−4=6+−4

3√2y=2........

Answer:

180 degree

Step-by-step explanation:

there are 360 degree in a circle so wen the clock is saying 6 o'clock the clock is being divided into two which makes 360 degree to be divided by two

Answer:

2/11 - chance that you will get a blue marble

3/11- chance that you will get a white marble

Answer:

(52.50x + 500) is greater or less than (60.50x + 300)

Step-by-step explanation:

Hope I answered your question!

The required inequality is given by 52.50x + 500 ≥ 60.50x + 300.

Given that,
Lola needs to rent a borrow for a formal event Heroes charges $52.50 per hour with a one-time rental fee of $500 by Ballroom T charges $60.50 per hour and a one-time fee of $300.

Inequality can be defined as the relation of the equation containing the symbol of ( ≤, ≥, <, >) instead of the equal sign in an equation.

Here,
Let the number of hours be x,
According to the question,
so,
52.50x + 500 ≥ 60.50x + 300

Thus, the required inequality is given by 52.50x + 500 ≤ 60.50x + 300.


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Answer:

16 times out of 64

Step-by-step explanation:

So, I could be wrong, but basically:

9, 10, and 11 are only 3 of the 12 possible outcomes that could happen.

3 out of 12 is 1/4.

What this means is that for every 4 times he spins the pointer, he can expect to get 9, 10, or 10 once.

Or 25% of the time

1/4 of 64 is 16.

Answer:

i assume that 2. is the right answer

Step-by-step explanation:

Answer:

The probability of 213 or fewer cases of such cancer in a group of 479,908 people is 0.2776.

Step-by-step explanation:

We are given that assuming that cell phones have no​ effect, there is a 0.000462 probability of a person developing cancer of the brain or nervous system. We, therefore, expect about 222 cases of such cancer in a group of 479,908 people.

Let [tex]\hat p[/tex] = sample probability of a person developing cancer of the brain or nervous system.

The z-score probability distribution for the sample proportion is given by;

                            Z  =  [tex]\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }[/tex]  ~ N(0,1)

where, p = population probability of a person developing cancer of the brain or nervous system = 0.000462

            n = sample of cell phone​ users = 479,908

Now, the probability of 213 or fewer cases of such cancer in a group of 479,908 people is given by = P([tex]\hat p[/tex] [tex]\leq[/tex] [tex]\frac{213}{479,908}[/tex] )

     P([tex]\hat p[/tex] [tex]\leq[/tex] 0.000444) = P([tex]\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }[/tex] [tex]\leq[/tex] [tex]\frac{0.000444-0.000462}{\sqrt{\frac{0.000444(1-0.000444)}{479,908} } }[/tex] ) = P(Z [tex]\leq[/tex] -0.59)

                                 = 1 - P(Z < 0.59) = 1 - 0.7224 = 0.2776

The above probability is calculated by looking at the value of x = 0.59 in the z table which has an area of 0.7224.

These results suggest about media reports that cell phones cause cancer of the brain or nervous​ system that there is around 28% chance that 213 or fewer cases of such cancer in a group of 479,908 people can take place.