number 27 You may need to use the appropriate appendix table or technology to answer this question. The life expectancy of a certain country is 79 with a standard deviation of 6 years. A random sample...

number 27

You may need to use the appropriate appendix table or technology to answer this question.

The life expectancy of a certain country is 79 with a standard deviation of 6 years. A random sample of 64 individuals is selected. (Round your answers to four decimal places.)

(a)

What is the probability that the sample mean will be larger than 81 years?

(b)

What is the probability that the sample mean will be less than 77.5 years?

(c)

What is the probability that the sample mean will be between 77 and 82 years?

(d)

What is the probability that the sample mean will be between 76 and 78 years?

(e)

What is the probability that the sample mean will be larger than 77 years?

Jun 08, 2022

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number 27 You may need to use the appropriate appendix table or technology to answer this question. The life expectancy of a certain country is 79 with a standard deviation of 6 years. A random sample...

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