Hello, the picture attached contains the problem along with the data set as well as part a. The other parts are included below. b. State the random variable(s) and the parameter(s) in words. c. State the null and alternative hypotheses and the level of significance. d. State and check the assumptions for a hypothesis test.   e. Find the sample statistics, test statistic, and p-value. Label everything with letters. Draw and label the normal curve.   f. Conclusion:   g. Interpretation:

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.