(CO 1) In a normally distributed data set of how long customers stay in your store, the mean is 31.7 minutes and the standard deviation is 1.9 minutes. Within what range would you expect 95% of your customers to stay in your store

The range is between 27.9 minutes and 35.5 minutes.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 31.7 minutes

Standard deviation = 1.9 minutes.

Within what range would you expect 95% of your customers to stay in your store

Within 2 standard deviations of the mean.

Lower bound: 31.7 - 2*1.9 = 27.9 minutes

Upper bound: 31.7 + 2*1.9 = 35.5 minutes

The range is between 27.9 minutes and 35.5 minutes.

b i think

step-by-step explanation:

not really sure

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (