Question

Exercises $20.46-20.58$ require the use of a computer and software. Use a $5 \%$ significance level unless specified otherwise. a XR20-47a A random sample of 30 people was asked to rate each of four different premium brands of coffee. The ratings are $\bullet$ Excellent $\bullet$ Good $\bullet$ Fair $\bullet$ Poor The responses were assigned numbers 1 through 4 respectively. Can we infer that differences exist between the ratings of the four brands of coffee? b XR20-47b Suppose that the codes were 12,31,66, and 72 respectively. Can we infer that differences exist between the ratings of the four brands of coffee? c Compare your answers in parts (a) and (b). Why are they identical?

   Exercises $20.46-20.58$ require the use of a computer and software. Use a $5 \%$ significance level unless specified otherwise.
a XR20-47a A random sample of 30 people was asked to rate each of four different premium brands of coffee. The ratings are
$\bullet$ Excellent
$\bullet$ Good
$\bullet$ Fair
$\bullet$ Poor
The responses were assigned numbers 1 through 4 respectively. Can we infer that differences exist between the ratings of the four brands of coffee?
b XR20-47b Suppose that the codes were 12,31,66, and 72 respectively. Can we infer that differences exist between the ratings of the four brands of coffee?
c Compare your answers in parts (a) and (b). Why are they identical?

Statistics for Management and Economics + XLSTAT Bind-in

Gerald Keller 8th Edition

Chapter 20, Problem 47

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We have a random sample of 30 people who rated four different premium brands of coffee. Each brand of coffee is rated as Excellent, Good, Fair, or Poor, which are then converted into numerical values. In part (a), these values are 1, 2, 3, and 4 respectively. In Show more…

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Exercises $20.46-20.58$ require the use of a computer and software. Use a $5 \%$ significance level unless specified otherwise. a XR20-47a A random sample of 30 people was asked to rate each of four different premium brands of coffee. The ratings are $\bullet$ Excellent $\bullet$ Good $\bullet$ Fair $\bullet$ Poor The responses were assigned numbers 1 through 4 respectively. Can we infer that differences exist between the ratings of the four brands of coffee? b XR20-47b Suppose that the codes were 12,31,66, and 72 respectively. Can we infer that differences exist between the ratings of the four brands of coffee? c Compare your answers in parts (a) and (b). Why are they identical?

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