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week 6 7.3.30

week 6 7.3.30 - W m Assignment Week 6 Exercises Date Course...

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Unformatted text preview: W m Assignment: Week 6 Exercises Date: 10/1/11 Course: Math 201 Fall B10 Time: 4:59 PM Book: Larson: Elementary Statistics: Picturing the World, 56 A restaurant association says the typical household spends a mean of \$3248 per year on food away ﬁom home.You are a consumer reporter for a national publication and want to test this claim. You randomly select 12 households and ﬁnd out how much each spent on food away from home per year. Can you reject the restaurant association's claim at a = 0.01? Complete parts (a) through (d). 3707 3497 2934 3809 1785 2256 3394 2956 3519 2262 1752 2908 (a) Write the claim mathematically and identify H0 and Ha. Choose the correct answer below. H0: we \$3248 H0: :4 = \$3248 (claim) W H0: 11 = \$3248 (claim) Ha: 11: \$3248 (claim) Ha: u> \$3248 Ha: 11¢ \$3248 Ho: 11 = \$3248 H0: 8 2 \$3248 (claim) Ho: 41 > \$3248 (claim) Ha: p< \$3248 (claim) Ha; p < \$3248 Ha: u 5 \$3248 (b) Use technology to ﬁnd the P—value. P = 0.12 ,. V (0) Decide Whether to reject or fail to reject the null hypothesis. Reject H0. ‘ Fail to reject H0. ((1) Interpret the decision in the context of the original claim. Assume the population is normally distributed. Choose the correct answer below. 9 At the 1% signiﬁcance level, there is insufﬁcient evidence to reject the claim. At the 1% signiﬁcance level, there is sufﬁcient evidence to reject the claim. At the 1% signiﬁcance level, there is insufﬁcient evidence to support the claim. At the 1% signiﬁcance level, there is sufﬁcient evidence to support the claim. YOU ANSWERED: A .0078 the ﬁrst choice D Page 1 ...
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