Answer to Question #251939 in Statistics and Probability for Nkah

Question

In a survey taken 10 years ago, it was found that 10% of customers of a supermarket brought along their own shopping bags. A recent survey aimed to prove that the current percentage of customers bringing along their own shopping bags is different from 10%. In the survey, it was found that 92 of the 1000 customers surveyed brought along their own shopping bags. We want to test the claim that the current percentage is not 10%, at the 5% significance level.
(a) State the appropriate null and alternative hypothesis. (2)
(b) State and calculate the appropriate test statistic. (8)
(c) Determine the critical value of the test or the pà ƒ ƒ ¢ € “value of the test. (4)
(d) State whether or not you reject the null hypothesis, giving the reason. (3)
(e) Draw an appropriate conclusion.

Answer 1

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