A data set lists earthquake depths. The summary statistics are n=400​, x=5.49 ​km, s=4.74 km. Use a 0.01 significance level to test the claim of a seismologist that these earthquakes are from a population with a mean equal to 5.00. Assume that a simple random sample has been selected. Identify the null and alternative​ hypotheses, test​ statistic, P-value, and state the final conclusion that addresses the original claim.

Dylan has collected 20 quarters and wants to compare the age of each coin to the age of all coins in the US. Select all the reasons why a z-test should not be used.   Choose all that apply: 1. The sample standard deviation cannot be calculated 2. The sample size is >10 3. We do not have the population standard deviation 4. The sample size is <30 5. The population is <500

In a random sample of ten people, the mean driving distance to work was 22.5 miles and the standard deviation was 5.6 miles. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 90% confidence interval for the population mean u. Interpret the results. Identify the margin of error. (Rou e as needed.) Con square miles interval for the population mean. miles (Rou miles per hour e as needed.) Interpret the results. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) OA. % of all random samples of ten people from the population will have a mean driving distance to work (in miles) that is between the interval's endpoints. B. With % confidence, it can be said that the population mean driving distance to work (in miles) is between the interval's endpoints. O C. It can be said that % of the population has a driving distance to work (in miles) that is…

You measure 39 textbooks' weights, and find they have a mean weight of 60 ounces. Assume the population standard deviation is 4.4 ounces. Based on this, construct a 90% confidence interval for the true population mean textbook weight.Give your answers as decimals, to three placesError =  ?  oz.Interval =  ?  oz. < μ <  ?  oz.