Mathematics, 21.12.2019 03:31 colin774
The national average for cumulative sat score was 1026 in 2003 and the sd was 105. sat scores generally follow the normal curve pretty closely. i take a srs of 5 students from our stat 21 class and find that the average and sd in my sample are 1240 and 90. do you believe that the class average is more than the 2003 national average? if appropriate, do a hypothesis test to answer this question, including null and alternative hypotheses, a box model, test statistic, p-value, and interpret the p-value. if it is not appropriate to do a hypothesis test, explain why not.
Answers: 1
Mathematics, 21.06.2019 18:20
The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%
Answers: 1
Mathematics, 21.06.2019 19:00
Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?
Answers: 3
The national average for cumulative sat score was 1026 in 2003 and the sd was 105. sat scores genera...
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