Mathematics, 19.11.2019 01:31 hannah1571
Among the most exciting aspects of a university professor's life are the departmental meetings where such critical issues as the color the walls will be painted and who gets a new desk are decided. a sample of 20 professors was asked how many hours per year are devoted to such meetings. the responses are listed below. assuming that the variable is normally distributed with a standard deviation of 6 hours, estimate the mean number of hours spent at departmental meetings by all professors. use a confidence level of 95%.
Answers: 2
Mathematics, 21.06.2019 15:00
Solve the word problem. the table shows the low outside temperatures for monday, tuesday, and wednesday. by how many degrees did the low temperature increase from monday to tuesday? this function table shows the outside temperature for a given a. 21.1โฐ b. 8.6โฐ c. 4.9โฐ d. 3.9โฐ(the picture is the graph the the question is talking about.)
Answers: 1
Mathematics, 21.06.2019 18:10
If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.
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
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