Question

Pierre’s sells blueberry muffins that have an average of 226 calories with a standard deviation of 15 calories, and chocolate chip muffins that have an average of 243 calories with a standard deviation of 22 calories. Assume the calorie amounts for both muffins follow Normal distributions.

If we were to randomly select a chocolate chip muffin, what is the probability that it would contain between 235 and 285 calories?

Provide the following:

Z1:

Value from Standard Normal table for Z1:

Z2:

Value from Standard Normal table for Z2:

Final answer:

d) If we were to randomly select a blueberry muffin and a chocolate chip muffin, what would we expect the difference in calories between the two muffins to be? What would the standard deviation of the difference be?

Expected value =

Standard deviation =

8. c) Above what calorie amount will be the highest 11% of blueberry muffins?

Provide following:

Value from Standard Normal table:

Z-score:

Final answer:

Answer 1

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