What percentage of the random samples will have a sample mean greater than 165 cm? b.) What percentage of the random sample mean will have a sample mean within 2 cm of the population mean

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The students in a certain high school have an average height of 160 cm with a standard deviation of 12 cm. Random samples of size 50 will be taken.

a.) What percentage of the random samples will have a sample mean greater than 165 cm?

b.) What percentage of the random sample mean will have a sample mean within 2 cm of the population mean?

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