The weekly expenditure on groceries of a random sample of 100 family households was recorded. It was estimated that the mean expenditure was approximately $240. With rising interest rates and petrol prices, it was anticipated that grocery expenditure might decrease. Which hypothesis test would you use to test this claim? a) One tailed, one sample t-test b) Two tailed, one sample t-test c) One tailed, z-test d) One-tailed Paired Samples t-test e) Chi Square

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 30E
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The weekly expenditure on groceries of a random sample of 100 family households was recorded. It was estimated that the mean expenditure was approximately $240. With rising interest rates and petrol prices, it was anticipated that grocery expenditure might decrease. Which hypothesis test would you use to test this claim?

a) One tailed, one sample t-test
b) Two tailed, one sample t-test
c) One tailed, z-test
d) One-tailed Paired Samples t-test
e) Chi Square
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