You measure 35 textbooks' weights, and find they have a mean
weight of 32 ounces. Assume the population standard deviation is
10.4 ounces. Based on this, construct a 95% confidence interval for
the true population mean textbook weight.
Give your answers as decimals, to two places
____________< μ <_________
Here population standard deviation is known, so we will use z distribution to find CI
z value for 95% CI is 1.96 as P(-1.96<z<1.96)=0.95
So Margin of Error is
Hence CI is
So answer is
You measure 35 textbooks' weights, and find they have a mean weight of 32 ounces. Assume...
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