You may need to use the appropriate appendix table or technology to answer this question. Lori Jeffrey is a successful sales representative for a major publisher of college textbooks. Historically, Lori obtains a book adoption on 25% of her sales calls. Viewing her sales calls for one month as a sample of all possible sales calls, assume that a statistical analysis of the data yields a standard error of the proportion of 0.0625. (a) How large was the sample used in this analysis? That is, how many sales calls did Lori make during the month? X sales calls (b) Let p indicate the sample proportion of book adoptions obtained during the month. Show the sampling distribution of p. 0.125 0.1875 0.25 0.3125 0.375 -0.125 -0.0625 0.0625 0.125 -1.75 -0.75 0.25 1.25 2.25 -0.0625 0.0625 0.125 0.1875 (c) Using the sampling distribution of p, compute the probability that Lori will obtain book adoptions on 35% or more of her sales calls during a one-month period. (Round your answer to four decimal places.) 0.2706 X
You may need to use the appropriate appendix table or technology to answer this question. Lori Jeffrey is a successful sales representative for a major publisher of college textbooks. Historically, Lori obtains a book adoption on 25% of her sales calls. Viewing her sales calls for one month as a sample of all possible sales calls, assume that a statistical analysis of the data yields a standard error of the proportion of 0.0625. (a) How large was the sample used in this analysis? That is, how many sales calls did Lori make during the month? X sales calls (b) Let p indicate the sample proportion of book adoptions obtained during the month. Show the sampling distribution of p. 0.125 0.1875 0.25 0.3125 0.375 -0.125 -0.0625 0.0625 0.125 -1.75 -0.75 0.25 1.25 2.25 -0.0625 0.0625 0.125 0.1875 (c) Using the sampling distribution of p, compute the probability that Lori will obtain book adoptions on 35% or more of her sales calls during a one-month period. (Round your answer to four decimal places.) 0.2706 X
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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Transcribed Image Text:You may need to use the appropriate appendix table or technology to answer this question.
Lori Jeffrey is a successful sales representative for a major publisher of college textbooks. Historically, Lori obtains a book adoption on 25% of her sales calls. Viewing her sales calls for one month as a
sample of all possible sales calls, assume that a statistical analysis of the data yields a standard error of the proportion of 0.0625.
(a) How large was the sample used in this analysis? That is, how many sales calls did Lori make during the month?
7
X sales calls
(b) Let p indicate the sample proportion of book adoptions obtained during the month. Show the sampling distribution of p.
0.125 0.1875
0.25
0.3125
0.375
-0.125 –0.0625
0.0625
0.125
-1.75
-0.75
0.25
1.25
2.25
-0.0625
0.0625
0.125
0.1875
(c) Using the sampling distribution of p, compute the probability that Lori will obtain book adoptions on 35% or more of her sales calls during a one-month period. (Round your answer to four decimal
places.)
0.2706X
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