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Confidence interval for the true population proportion

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In a sample of 320 adults, 186 had children. Construct a 90% confidence interval for the true population proportion of adults with children.

_________________ < p < ________________________

You measure 40 backpacks' weights, and find they have a mean weight of 76 ounces. Assume the population standard deviation is 11.1 ounces. Based on this, construct a 99% confidence interval for the true population mean backpack weight.

Decimals to two places

______________________ +- ____________________ ounces

The p-value for a hypothesis test turns out to be 0.09802. At a 10% level of significance, what is the proper decision.

  • Reject Ho
  • Fail to reject Ho

Reference no: EM131966985

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