33. a. What z score cuts off the bottom 2.5% of all scores in the normal...

33. a. What z score cuts off the bottom 2.5% of all scores in the normal distribution?

b. If shoe size in humans has a mean of µx = 10.4 and a standard deviation of σx = 1.8, and Rodney has a shoe size of 8.9, what proportion of humans have shoes larger than Rodney?

c. What happens to the standard error of x̅ as sample size increases?

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thank you.

orchestra answered 1 year ago

What two z scores cut off the middle 95% of the normal distribution?

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33. a. What z score cuts off the bottom 2.5% of all scores in the normal...

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