Question
Asked Mar 17, 2020
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You measure 44 textbooks' weights, and find they have a mean weight of 73 ounces. Assume the population standard deviation is 12.2 ounces. Based on this, construct a 99% confidence interval for the true population mean textbook weight. Round answers to at least 4 decimal places.

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Expert Answer

Step 1

The confidence level is provided as 99%. The level of significance = 1 – confidence level = 1 – 0.99 = 0.01.

Using the standard normal table, the critical value for Zα/2 is 2.58.

The provided data is,

Statistics homework question answer, step 1, image 1

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