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Use the confidence interval to find the margin of error and the sample mean. (1.76,2.00) The margin of error is □ Round to two decimal places as needed.) The sample mean is Type an integer or a decimal.)
Find the minimum sample size n needed to estimate μ for the given values of c. and E. cz 0.90, ơ 7.9, and E-2 Assume that a preliminary sample has at least 30 members. n-Round up to the nearest whole number )
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