A firm specializing in the preparation of income tax returns, claims the mean refund for customers who received refunds last year was R150. For a random sample of 12 customers who received refunds last year, the mean amount was found to be R125, with a standard deviation of R43. What is the alternative hypothesis?
A firm specializing in the preparation of income tax returns, claims the mean refund for customers who received refunds last year was R150. For a random sample of 12 customers who received refunds last year, the mean amount was found to be R125, with a standard deviation of R43. What is the alternative hypothesis?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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