Homework: Chapter 5 Homework Save Score: 0.67 of 2 pts 2 of 5 (2 complete) HW Sc
ID: 3305979 • Letter: H
Question
Homework: Chapter 5 Homework Save Score: 0.67 of 2 pts 2 of 5 (2 complete) HW Score: 26.67%, 2.67 of 10 pts %) 5.1.13-T Question Help The owner of an electronic store has read an advertisement from a local competitor that guarantees all high-definition television (HDTV) repairs within four days. Based on his company's Number of experience, he wants to know if he can offer a similar guarantee. His past service records are used to determine the probability distribution shown to the right. Complete parts a throughc Days Probability below 0.14 0.22 0.28 0.23 0.13 The mean is 2.99 days. (Type an integer or a decimal.) b. Also calculate the variance and standard deviation. The variance is 1.5299 days. (Type an integer or a d The standard deviation is 1.2369 days. (Round to four decimal places as needed.) c. Based on the calculations in parts a and b, what conclusion should the manager reach regarding his company's repair times? Based on the probability distribution, the chances of exceeding four days for repair time is ecimal.) Type an integer or a decimal.) Enter your answer in the answer box and then click Check Answer part remaining Clear All Check AnswerExplanation / Answer
On the basis of part a , the manager reach regarding his company's repairs time on an average is 2.99 days. Part b, 1.2369 days is variation between repairs time.
The chances of exceeding 4 days for repair times is
P( X>4) = P(X=5) = 0.13
( On the basis of probability distribution shown as right side in your question.)
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