An educational psychologist is studying two methods of tutoring young children: Method A and Method B. She wants to test whether there is any difference inpuzzle solving skills between children tutored by one method versus children tutored by the other. Independent samples of 11 children who were tutored usingMethod A and 10 children who were tutored using Method B were chosen at random. The Method A children took a mean of 43 minutes to solve a certain puzzlewith a standard deviation of 8 minutes. The Method B children took a mean of 42 minutes to solve the same puzzle with a standard deviation of 7 minutes.Assume that the two populations of completion times are normally distributed and that the population varlances are equal. Construct a 90% confidence intervalfor the difference u,-H, between the mean puzzle-solving times for Method A children (u) and for Method B children (1,). Then find the lower limit and upperlimit of the 90% confidence interval.Carry your intermediate computations to at least three decimal places. Round your responses to at least two decimal places. (If necessary, consult a list offormulas.)Lower limit: MUpper limit:

We have given that, x̄1 = 43, s1 = 8, n1 = 11 And x̄2 = 42, s2 = 7, n2 = 10

Answered: An educational psychologist is studying…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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