Large companies typically collect volumes of data before designing a product, not only to gain information as to whether the product should be released, butalso to pinpoint which markets would be the best targets for the product. Several months ago, I was interviewed by such a company while shopping at a mall. Iwas asked about my exercise habits and whether or not I'd be interested in buying a video/DVD designed to teach stretching exercises. I fall into the male, 18 -35-years-old category, and I guessed that, like me, many males in that category would not be interested in a stretching video. My friend Holly falls in thefemale, older-than-35 category, and I was thinking that she might like the stretching video. After being interviewed, I looked at the interviewer's results. Of the94 people in my market category who had been interviewed, 14 said they would buy the product, and of the 108 people in Holly's market category, 34 said theywould buy it. Assuming that these data came from independent, random samples, can we conclude (at the 0.01 level of significance) that the proportion p,ofall mall shoppers in my market category who would buy the product is less than the proportion p, of all mall shoppers in Holly's market category who would buythe product?Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places and round your answers as specified in the parts below. (If necessary, consult a list offormulas.)(a) State the null hypothesis H and the alternative hypothesis H,.HoH :0(b) Determine the type of test statistic to use.O=0OSO(Choose one) ▼(c) Find the value of the test statistic. (Round to three or more decimal places.)O

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(a) State the null hypothesis H, and the alternative hypothesis H. Ho H :0 (b) Determine the type of test statistic to use. (Choose one) (c) Find the value of the test statistic. (Round to three or more decimal places.)

(a) State the null hypothesis H, and the alternative hypothesis H. Ho H :0 (b) Determine the type of test statistic to use. (Choose one) (c) Find the value of the test statistic. (Round to three or more decimal places.)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

Large companies typically collect volumes of data before designing a product, not only to gain information as to whether the product should be released, but
also to pinpoint which markets would be the best targets for the product. Several months ago, I was interviewed by such a company while shopping at a mall. I
was asked about my exercise habits and whether or not I'd be interested in buying a video/DVD designed to teach stretching exercises. I fall into the male, 18 -
35-years-old category, and I guessed that, like me, many males in that category would not be interested in a stretching video. My friend Holly falls in the
female, older-than-35 category, and I was thinking that she might like the stretching video. After being interviewed, I looked at the interviewer's results. Of the
94 people in my market category who had been interviewed, 14 said they would buy the product, and of the 108 people in Holly's market category, 34 said they
would buy it. Assuming that these data came from independent, random samples, can we conclude (at the 0.01 level of significance) that the proportion p,
of
all mall shoppers in my market category who would buy the product is less than the proportion p, of all mall shoppers in Holly's market category who would buy
the product?
Perform a one-tailed test. Then complete the parts below.
Carry your intermediate computations to three or more decimal places and round your answers as specified in the parts below. (If necessary, consult a list of
formulas.)
(a) State the null hypothesis H and the alternative hypothesis H,.
Ho
H :0
(b) Determine the type of test statistic to use.
O=0
OSO
(Choose one) ▼
(c) Find the value of the test statistic. (Round to three or more decimal places.)
O<O
(d) Find the p-value. (Round to three or more decimal places.)
(e) Can we conclude that the proportion of mall shoppers in my market category
who would buy the product is less than the proportion in Holly's market
category who would?
O Yes
No

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