SOLUTION: A claim is published that in a certain area of high unemployment, $195 is the average amount spent on food per week by a family of four. A home economist wants to test this claim a
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Question 1172065: A claim is published that in a certain area of high unemployment, $195 is the average amount spent on food per week by a family of four. A home economist wants to test this claim against the suspicion that the true average is lower than $195. She surveys a random sample of 36 families from the locality and finds the mean to be $193.20 with a standard deviation of $6.80. Using the Minitab printout below and 0.01 level of significance, test the home economists claim. Answer by ikleyn(52803) (Show Source):
