Ralphâs Bookstores have indicated that the annual gross revenue for their stores has a standard deviation of Ï=$50,000. Blank #1: Given a sample size of 25 and a sample mean of $270,000, create a 90% confidence interval for estimating the population mean annual gross revenue. Enter your answer as lower bound, upper bound with no extra spaces and bounds rounded to nearest whole number.
Given a sample size of 25 and a sample mean annual gross revenue of $270,000, conduct a hypothesis test with a 0.10 level of significance to show that the population mean number of boxes sold is different from $250,000.
Blank #2: Report the p-value of the test to 4 decimal places.
These procedures support each other because the value of $250,000 is (Blank #3: not in or in) the confidence interval and the p-value of the test is (Blank #4: smaller than or not smaller than) level 0.10.