Answered: A study of the effect of television…

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 58E: What is meant by the sample space of an experiment?

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Question

A study of the effect of television commercials on 12-year-old children measured their attention span, in seconds. The commercials were for clothes, food, and toys.

Clothes	Food	Toys
34	38	64
30	34	50
44	51	39
35	42	48
28	47	63
31	42	53
17	34	48
31	43	58
20	57	47
	47	51
	44	51
	54

a. What are the null and alternate hypotheses?

b. Complete the ANOVA table. Use 0.05 significance level. (Round the SS and MS values to 1 decimal place, F value, p-value, and F crit to 2 decimal places. Leave no cells blank — be certain to enter "0" wherever required. Round the df values to nearest whole number.)

c. What is the test statistic?

d. What is the p-value?

e. What is your decision regarding the null hypothesis?

f. Interpret the result.

g. Compute the 95% confidence intervals that estimate the difference between each pair of means. (Negative amount should be indicated by a minus sign. Round your answers to 2 decimal places.)

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