One wishes to test Ho : u = 880.H.: u< 880. A random sample with size 10 produced a sample mean of 850 and s = 20, Assume that the population follows a normal distribution. Which of the following is the corresponding rejection region with significance level .01? (-00, 2.821) b. (2.821, ) a. c. (-00, .2.821) d. (-00, 2.575) e. (2.575,00)

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A: Here, x y d=x-y d-d (d-d)2 98.1 98.5 -0.4 -0.26 0.0676 98.8 99.1 -0.3 -0.16 0.0256 97.1…

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Q: If X = 85, Y = 54, and Y' = 62, what is the residual score? a. -8 b. 23 c. 8 d. 31

A: Solution: From the given information, Y=54 and Y’=62.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.