AP Stat Review - Dean Frazier | Laabri | Nneɛma a ɛma wotumi yɛ ade

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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:

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Normally distributed, with mean of 10 and standard deviation of 2.

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.

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The number of phone calls received in a one-hour period.

The number of times I have to roll a 6-sided die to get two 5s.

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.

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Use a larger confidence interval.

Use a smaller confidence interval.

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

Increase the sample size.

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

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The distribution is symmetric.

The distribution is skewed left.

The distribution is skewed right.

The distribution is bimodal.

The data set probabilty has a few low outliers.

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Whether there is a relationship between two variables.

The strength of the relationship between two quantitative variables.

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.