this suggest at the 0.025 level of significance that vacuum cleaners expend, on the average, less than 46 kw-h annually? Critical Region: Test Statistic: Decision (Accept or Reject):
this suggest at the 0.025 level of significance that vacuum cleaners expend, on the average, less than 46 kw-h annually? Critical Region: Test Statistic: Decision (Accept or Reject):
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 4GP
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Question
The Hamazon Institute has published figures on the annual kilowatt hours expended by various home appliances. It is claimed that vacuum cleaner expends an average of 46 kw-h per year. If a random samples of 12 homes included in the study that vacuum cleaners expends an average of 42 kw-h and std. deviation of 11.9 kw-h, does this suggest at the 0.025 level of significance that vacuum cleaners expend, on the average, less than 46 kw-h annually?
Critical Region:
Test Statistic:
Decision (Accept or Reject):
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