Suppose that a researcher is interested in estimating means systolic blood pressure, u, executive some major corporations. He plans to use the blood pressures of a random sample executives of major corporations to estimate u. Assuming that the standard deviation of the population of systolic blood pressure is executives of major operations is 26 mm Hg, what is the minimum sample size needed for the researcher to be 90% confident that his estimate is within 6 mm Hg of u?  Carrier intermediate cavitation to at least three decimal places. write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements).

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Suppose that a researcher is interested in estimating means systolic blood pressure, u, executive some major corporations. He plans to use the blood pressures of a random sample executives of major corporations to estimate u. Assuming that the standard deviation of the population of systolic blood pressure is executives of major operations is 26 mm Hg, what is the minimum sample size needed for the researcher to be 90% confident that his estimate is within 6 mm Hg of u? 
Carrier intermediate cavitation to at least three decimal places. write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements).

Expert Solution
Step 1

The random variable systolic blood pressure follows normal distribution.

The population standard deviation is 26.

The margin of error is 6.

We have to find the sample size.

This is one sample z-test.

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