A data set represents the wait time (in minutes) for a random sample of 100 visitors to Disney's Dinosaur Ride in Animal Kingdom. Technology was used to obtain a random sample of 40 observations from the original sample of 100 visitors. Complete parts (a) through (c) below.

Click here to view the sample data.

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Click here to view the table of critical values.

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(a) Draw a relative frequency histogram with lower class limit of the first class equal to 0 and class width 20.

A.

Wait Time (in minutes) at Dinosaur Ride

02040608051015202530Wait TimeFrequency

A histogram titled "Wait Time (in minutes) at Dinosaur Ride" has a horizontal axis labeled "Wait Time" from 0 to 80 in increments of 20 and a vertical axis labeled "Frequency" from 0 to 30 in increments of 5. The histogram contains vertical bars of width 20, starting at the horizontal axis value 0. The heights of the vertical bars are as follows, where the lower class limit of the wait time is listed first and the frequency is listed second: 0, 27; 20, 9; 40, 2; 60, 2.Your answer is correct.

B.

Wait Time (in minutes) at Dinosaur Ride

02040608051015202530Wait TimeFrequency

A histogram titled "Wait Time (in minutes) at Dinosaur Ride" has a horizontal axis labeled "Wait Time" from 0 to 80 in increments of 20 and a vertical axis labeled "Frequency" from 0 to 30 in increments of 5. The histogram contains vertical bars of width 20, starting at the horizontal axis value 0. The heights of the vertical bars are as follows, where the lower class limit of the wait time is listed first and the frequency is listed second: 0, 2; 20, 27; 40, 9; 60, 2.

C.

Wait Time (in minutes) at Dinosaur Ride

02040608051015202530Wait TimeFrequency

A histogram titled "Wait Time (in minutes) at Dinosaur Ride" has a horizontal axis labeled "Wait Time" from 0 to 80 in increments of 20 and a vertical axis labeled "Frequency" from 0 to 30 in increments of 5. The histogram contains vertical bars of width 20, starting at the horizontal axis value 0. The heights of the vertical bars are as follows, where the lower class limit of the wait time is listed first and the frequency is listed second: 0, 2; 20, 9; 40, 27; 60, 2.

D.

Wait Time (in minutes) at Dinosaur Ride

02040608051015202530Wait TimeFrequency

A histogram titled "Wait Time (in minutes) at Dinosaur Ride" has a horizontal axis labeled "Wait Time" from 0 to 80 in increments of 20 and a vertical axis labeled "Frequency" from 0 to 30 in increments of 5. The histogram contains vertical bars of width 20, starting at the horizontal axis value 0. The heights of the vertical bars are as follows, where the lower class limit of the wait time is listed first and the frequency is listed second: 0, 2; 20, 2; 40, 9; 60, 27.

(b) Comment on the shape of the distribution. Choose the correct answer below.

A.

The distribution is uniform.

B.

The distribution is skewed left.

C.

The distribution is bell-shaped.

D.

The distribution is skewed right.

Your answer is correct.(c) Is it reasonable to conclude that the variable "Wait Time" is approximately normally distributed? Note: Use the critical value for

n=30

from the table provided.

Select the correct choice below and fill in the answer boxes to complete your choice.

(Round to three decimal places as needed.)

A.No. The correlation between the expected z-scores and the observed data,

nothing,

does not exceed the critical value,

nothing.

Therefore, it is reasonable to conclude that the data come from a normal population.

B.No. The correlation between the expected z-scores and the observed data,

0.9220.922,

does not exceed the critical value,

0.9600.960.

Therefore, it is not reasonable to conclude that the data come from a normal population.

C.Yes. The correlation between the expected z-scores and the observed data,

nothing,

exceeds the critical value,

nothing.

Therefore, it is reasonable to conclude that the data come from a normal population.

D.Yes. The correlation between the expected z-scores and the observed data,

nothing,

exceeds the critical value,

nothing.

Therefore, it is not reasonable to conclude that the data come from a normal population.

Click to select and enter your answer(s) and then click Check Answer.