Question

In: Statistics and Probability

You want to rent an unfurnished one-bedroom apartment in downtown San Diego next year. The mean...

You want to rent an unfurnished one-bedroom apartment in downtown San Diego next year. The mean monthly rent for a random sample of 100 apartments advertised on Craigslist is $1800. Assume a population standard deviation of $150. Find a confidence interval estimate for the population mean of rent for an unfurnished one-bedroom apartment in downtown San Diego.

5)Find a 95% confidence interval for the true (population) mean of rent for an unfurnished one-bedroom apartment in downtown San Diego.

  • (1770.6, 1829.4)

6)Sketch the graph illustrating the 95% confidence interval making sure to label and shade appropriately. Leave the answer box empty and upload the graph after submitting the quiz.

7)The CEO of a flashlight manufacturing company claims that an average flashlight lasts 300 days. A researcher randomly selects 15 flashlights for testing. The sampled flashlights last an average of 290 days, with a standard deviation of 50 days. Use the Student's t-distribution to construct a 96% confidence interval for the average (mean) amount of hours for all flashlights. Use the confidence interval to describe the lifetime of the company’s flashlights.

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Please find attached answers...Hope you like my explanation..Thank You!

orchestra answered 1 year ago
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