AP Stats Exam Review

Is the average down payment on a person’s first home greater than 10%?  The realty association recently surveyed 300 first time home buyers.

• Interval for one sample mean
• interval for one sample proportion
• test for one sample mean
• test for one sample proportion

How much larger is the average bail that is set for male defendants than for female defendants?  55 male defendants and 35 female defendants were studied.

• Interval for two sample mean
• interval for two sample proportion
• test for two sample mean
• test for two sample proportion

You want to construct a 98* confidence interval. What z* do you use?

• 1.645
• 1.960
• 2.326
• 2.576

How much more money do students have to spend on private universities compared with public universities?  Costs of forty private universities and forty public universities were researched.

• two sample mean interval
• two sample mean test
• chi square test
• two sample proportion interval

Does South Lake Tahoe have the same ethnic makeup as that of the (known) distribution of California?  Five Hundred South Lake Tahoe residents were asked about their ethnicity.

• one sample mean interval
• one sample proportion test
• chi square test
• linear regression test

Tags

CCSS.HSS.IC.B.4

On the calculator, use the binomial CDF to calculate the probability of getting 5 or more tails. The probability of one tail is 62% and the coin was flipped 10 times.

• 0.318
• 0.001
• 0.647
• 0.865

You are given a normal approximation and are told the mean is 10 with standard deviation 2. What is the range for 95% of the data?

• 8-12
• 6-14
• 10-14
• 4-16

Tags

CCSS.HSS.ID.A.4

A study is done to see how chocolate affects weight in women. They given each woman 2 ounces of chocolate each day and monitor their weight each week for 6 months. What is the response variable?

• Weight
• Chocolate
• 6 months
• 2 ounces

Tags

CCSS.6.SP.A.3

How likely are people to agree to answer a phone questioner when a market researcher calls?  A market researcher called 150 people and wrote down the results.

• one sample proportion interval
• one sample proportion test
• one sample mean interval
• one sample mean test

Do all working hours experience the same productivity levels?  1000 employees were observed during each of the eight hours from 9:00 to 5:00.

• Linear Regression test
• Chi Square Test
• Mean Test
• Proportion Test