You measure 45 textbooks' weights, and find they have a mean weight of 73 ounces. Assume the population standard deviation is 11 ounces. Based on this, construct a 90% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places < μ <
We need to construct the 90% confidence interval for the population mean μ. The following information is provided:
Sample Mean = | 73 |
Population Standard Deviation (σ) = | 11 |
Sample Size (N) = | 45 |
The critical value for is .
The corresponding confidence interval is computed as shown below:
Therefore, based on the data provided, the 90% confidence interval for the population mean 70.30<μ<75.70
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You measure 45 textbooks' weights, and find they have a mean weight of 73 ounces. Assume...
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