AP Stats 11/13/2018

Uchenna runs to the right 60% of the time, he runs to the left 30% of the time, and he runs up the middle 10% of the time. What is the probability that he runs up the middle on 2 consecutive plays to start the game?

• 0.30

• 0.01

• 0.10

• 0.20

The average number of students at private schools is 400 with a standard deviation of 40. If Asheville school has 280 students, what percentile is Asheville school in?

• 5%

• 2%

• 14%

• 13%

Tags

CCSS.HSS.ID.A.4

The average temp in the CCC is 70 degrees with a standard deviation of 2.45. What temp is the 69th percentile?

• 73

• 71.3

• 72.4

• 70.9

Tags

CCSS.HSS.ID.A.4

Michael has a height of 61. If the mean height of men in California is 68 inches with a standard deviation of 5, what percent of men have a height higher than Michael's?

• 8.08%

• 79.39%

• 84.85%

• 91.92%

Tags

CCSS.HSS.ID.A.4

A group of adult female Golden Retrievers in Asheville, NC have an average weight of 65 lbs with a standard deviation of 2.3 lbs. Lily, an active dog, weighs 67.4 lbs. What percent of other dogs weigh more than her? (round to the nearest whole percent)

• 34%

• 15%

• 7%

• 5%

Tags

CCSS.HSS.ID.A.4

What is the z score formula?

• (x-mean) / standard deviation

• (x+mean) /standard deviation

• (x*standard deviation) + mean

• (x - standard deviation) / mean

Jane is doing open water 5k swim race in South Africa. Her time is 81 minutes. If the mean time for the women was 84 minutes with a standard deviation of 1.5 minutes, in what percent did Jane fall relative to the group?

• 5.08%

• 2.28%

• 70.83%

• 97.72%

Tags

CCSS.HSS.ID.A.4

There is a 44% chance that a student will take biology in a specific year of high school, and a 56% chance that a student will take chemistry. What is the probability that a student will take both, assuming these are independent.

• 24.64%

• 26.44%

• 44%

• 75.36%

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

You roll one dice two times. What is the probability that you will roll a 6 then a 2?

• 1/2

• 1/18

• 1/6

• 1/36

If your P-value is greater than .05 what can you concur?

• You can reject the null because there is significant evidence shown.

• You cannot reject the null because there is not significant evidence shown.

• You can reject the null because there is not significant evidence shown.

• You cannot reject the null because there is significant evidence shown.