Mathematics, 22.02.2020 00:19 frizzy52

Can someone help me with two questions whoever helps me with this one please help with the second

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Mathematics, 21.06.2019 18:20, nehaljay1883

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%

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Mathematics, 21.06.2019 19:20, TrudnEli1217

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Mathematics, 21.06.2019 21:00, candaceblanton

Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.

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Mathematics, 21.06.2019 22:20, skyhighozzie

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)

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Can someone help me with two questions whoever helps me with this one please help with the second