The distribution of results from a cholesterol test has a mean of 180 and a standard deviation of 20

Question

Question

1.

The distribution of results from a cholesterol test has a mean of 180 and a standard deviation of 20. A sample size of 40 is drawn randomly.

Find the probability that the sum of the 40 values is greater than 7,400. (Round your answer to four decimal places.)

2.

A researcher measures the amount of sugar in several cans of the same soda. The mean is 39.01 with a standard deviation of 0.5.

The researcher randomly selects a sample of 100. Find the sum with a score of -2.8. (Enter an exact number as an integer, fraction, or decimal.)

Answer 1

Answer #1

Answer 2

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