AP Stat Review

Last updated about 6 years ago

10 questions

Note from the author:

1

Library

AP Stat Review

Last updated about 6 years ago

10 questions

Note from the author:

AP Statistics Cummulative Review First Semester

1

People with type O-negative blood are universal donors. That is, any patient can recieve a transfusion of O-negative blood. Only 7.2% of the population has O-negative blood. If 10 people appear at random to give blood, what is the probability that at least 1 of them is a universal donor?

1

High school textbooks don't last forever. The lifespan of all high school statistics textbooks is approximately Normally distributed with a mean of 9 years and a standard deviation of 2.5 years. What percentage of books last more than 10 years?

1

The distribution of the time it takes for different people to solve their AP Free response question is strongly skewed to the right, with a mean of 10 minutes and a standard deviation of 2 minutes. The distribution of z-scores with those times is...

1

Which of the following random variables is geometric?

1

A marketing company discovered the following problems with a recent poll:
1. Some people refused to answer the questions.
2. People without telephones could not be in the sample.
3. Some people never answered the phone in several calls.
Which of these sources is/are included in the plus or minus 2% margin of error announced for the poll?

1

The standardized test scores of 16 students have a mean x-bar = 200 and standard deviation s = 20. What is the standard error of x-bar?

1

I collect random samples of size n from a population and from the data collected compute a 95% confidence interval for the mean of the population. Which of the following would produce a wider confidence interval based on these same data?

1

A set of data has a mean that is much larger than the median. Which of the following statements is most consistent with this information?

1

The correlation coefficient measures

AP Statistics Cummulative Review First Semester

The probability that you will win a prize in a carnival game is about 1/7. During the last nine attempts, you have failed to win. You decide to give it one last shot. Assuming the outcomes are independent from game to game, the probability that you will win is:

People with type O-negative blood are universal donors. That is, any patient can recieve a transfusion of O-negative blood. Only 7.2% of the population has O-negative blood. If 10 people appear at random to give blood, what is the probability that at least 1 of them is a universal donor?

High school textbooks don't last forever. The lifespan of all high school statistics textbooks is approximately Normally distributed with a mean of 9 years and a standard deviation of 2.5 years. What percentage of books last more than 10 years?

The distribution of the time it takes for different people to solve their AP Free response question is strongly skewed to the right, with a mean of 10 minutes and a standard deviation of 2 minutes. The distribution of z-scores with those times is...

Which of the following random variables is geometric?

A marketing company discovered the following problems with a recent poll:
1. Some people refused to answer the questions.
2. People without telephones could not be in the sample.
3. Some people never answered the phone in several calls.
Which of these sources is/are included in the plus or minus 2% margin of error announced for the poll?

The standardized test scores of 16 students have a mean x-bar = 200 and standard deviation s = 20. What is the standard error of x-bar?

I collect random samples of size n from a population and from the data collected compute a 95% confidence interval for the mean of the population. Which of the following would produce a wider confidence interval based on these same data?

A set of data has a mean that is much larger than the median. Which of the following statements is most consistent with this information?

The correlation coefficient measures

The probability that you will win a prize in a carnival game is about 1/7.  During the last nine attempts, you have failed to win.  You decide to give it one last shot.  Assuming the outcomes are independent from game to game, the probability that you will win is:

0.526

0.720

1

65.5%

69%

84.5%

Skewed to the right, with mean of 10 and standard deviation of 2.

Normally distributed, with mean of 0 and standard deviation of 1.

Skewed to the right, with mean of 0 and standard deviation of 1.

Skewed to the right, but the mean and standard deviation cannot be determined without more information.

The number of digits I will read beginning at a randomly selected starting point in a table of random digits until I find a 7.

The number of 7s in a row of 40 random digits. 

All four of the above are geometric random variables.

Only source 2.

Only source 3.

All sources of error.

None of these sources of error.

1.25

0.80

Use a smaller confidence interval.

Use the same confidence level, but computer the interval n times.  Approximately 5% of these intervals will be larger.

Nothing can ensure that you will get a larger interval. One can only say the chance of obtaining a larger interval is 0.05.

The distribution is skewed right.

The distribution is bimodal.

The data set probabilty has a few low outliers. 

Whether or not a scatterplot shows an interesting pattern.

Whether a cause or effect relation exist between two variables.

The strength of the linear relationship between two quantitative variables.