Statistics Question

timer Asked: Nov 21st, 2016

Question description

A manufacturer of LED 3D televisions claims that only 8% of all its televisions require service during the one-year warranty period. In order to investigate this claim, a consumer protection agency takes a random sample of 200 households that purchased one of the company’s televisions. (a) Let ˆ Prepresent the sample proportion of televisions that require service during the warranty period. Assuming that the company’s claim is true, what is the approximate sampling distribution of ˆ P? (b) Approximate the probability that at least 10% of televisions in the sample will require service during the warranty period. (c) The sample actually revealed that 24 of the 200 households required their television to be serviced during the warranty period. Construct a 95% confidence interval for the proportion of all LED 3D televisions manufactured by this company that are serviced under warranty. Interpret the result. (d) Suppose the consumer protection agency wishes the confidence interval in part (c) to be accurate to within 2%. What sample size would you recommend they use? You may use the information in part (c) to estimate the population proportion, p.

Tutor Answer

(Top Tutor) Studypool Tutor
School: UCLA
Studypool has helped 1,244,100 students
flag Report DMCA
Similar Questions
Hot Questions
Related Tags
Study Guides

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors