Suppose That a Group of 100 Consumers Are Asked to Rate

question 11

Multiple Choice

Suppose that a group of 100 consumers are asked to rate how much they liked the taste of a new soft drink on a 5-point scale (where 5 = good taste and 1 = poor taste) and the mean rating was 4.2 with a standard deviation of 1.48.Suppose,further,that the standard error of the mean for this study was 0.15.If you wanted to find the 95 percent confidence interval (two-tailed test) ,and if the Z-value at the 0.05 level of significance is 1.96,the confidence interval lies between:

• A)3.91 and 4.49
• B)4.17 and 4.23
• C)3.98 and 4.42
• D)4.00 and 5.00

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