AP Stats Review

Question 1

Hint: The following is a sampling distribution of a sample mean.

Accepted Answer

0.0568

Question 2

SRS of 40 college apps is taken & SAT math/verbal scores are noted. Which is the proper test?

Accepted Answer

One sample test on differences of paired data.

Question 3

Which of the following are unbiased estimators for the corresponding population parameters?

Accepted Answer

All of the above.

Question 4

For which of the following is a binomial an appropriate model?

Accepted Answer

# hits in 5 at-bats where p=.352 or .324 based on pitcher.

Question 5

Given the median is 270 and the IQR is 20, which of the following statements are true?

Accepted Answer

I only

Question 6

Suppose P(X)=0.25 and P(Y)=0.40. If P(X l Y)=0.20, what is P(Y l X)?

Accepted Answer

0.32

Question 7

Which of the following are true statements about blocking?

Accepted Answer

I, II, and III

Question 8

On overcast day, if null hypothesis = "weather remains dry", what is Type I and Type II error?

Accepted Answer

Type I: needlessly carry umbrella & Type II: get drenched.

Question 9

Which of the following are true statements?

Accepted Answer

III only

Question 10

If P(A)=0.25 and P(B)=0.34, what is P(A U B) if A & B are independent?

Accepted Answer

0.505

Question 11

Which of the following are true statements?

Accepted Answer

I only

Question 12

Suppose 80% jurors make decision. In jury of 6 people, what is the prob. > half make decision?

Accepted Answer

0.90112

Question 13

If n=20, Min=68, Q1=78, Med=86, Q3=91, Max=112, what can be said about the number of outliers?

Accepted Answer

At least 1

Question 14

Which of the following are true statements?

Accepted Answer

I and II

Question 15

If scatterplot of logx & logy has a strong positive r close to 1, which of following is true?

Accepted Answer

II only

Questions 15