A company warranties its laptop computers. Every defective laptop costs the company $200 in repair costs. The company estimates that 10% of all laptops sold will require warranty repair. If 20 laptops are sold, then a) What is the expected number needing repair? It is b) What are the expected warranty costs? It is s b) What is the variance of the number of laptops (X) needing warranty repair? It is c) What is the standard deviation of cost (Y) to the company of warranty repair? it is dollars. Note: We can model the problem as X=#of computers needing repair Y cost of the warranty repair Y=$200X

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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A company warranties its laptop computers. Every defective laptop costs the company $200 in repair costs. The company estimates that 10% of all laptops sold will require warranty repair. If 20 laptops are
sold, then
a) What is the expected number needing repair? It is
b) What are the expected warranty costs? It is s
b) What is the variance of the number of laptops (X) needing warranty repair? It is
c) What is the standard deviation of cost (Y) to the company of warranty repair? it is
dollars.
Note: We can model the problem as
X=#of computers needing repair
Y cost of the warranty repair
Y=$200X
Transcribed Image Text:A company warranties its laptop computers. Every defective laptop costs the company $200 in repair costs. The company estimates that 10% of all laptops sold will require warranty repair. If 20 laptops are sold, then a) What is the expected number needing repair? It is b) What are the expected warranty costs? It is s b) What is the variance of the number of laptops (X) needing warranty repair? It is c) What is the standard deviation of cost (Y) to the company of warranty repair? it is dollars. Note: We can model the problem as X=#of computers needing repair Y cost of the warranty repair Y=$200X
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