Question: The stock market in Qatar reported strong return s in the first 11 months of 2018. The population of s tocks earned a mean return

The stock market in Qatar reported strong return s in the first 11 months of 2018. The population of s tocks earned a mean return of 21.19 % in 2018.

Assume that the re turns for s tock s on the Q a ta r stock market were distributed as a norm al variable, with a mean of 21.19 and a standard deviation of 20. If you selected a random sample of 16 stocks from this population, what is the probability that the sample would have a mean return

a. Less than 0 (i. e., a loss)?

b. Between 0 and 10?

c. Greater than 10?

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