Mathematics, 15.04.2020 18:28, keving4three
A testing engineer in a light bulb factory is planning a study to estimate the average life of a large shipment of light bulbs. The engineer wants to estimate the average life within plus or minus 16 hours with 95 percent confidence. Assuming a process standard deviation of 90 hours, determine the sample size for this study.
a. 7
b. 43
c. 58
d. 122
Answers: 2
, where 
= prior population standard deviation, z= Critical z-value for confidence level and E = Margin of error.
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 15:10, daniiltemkin20
Which equation represents the partial sum of the geometric series?
Answers: 1
Mathematics, 21.06.2019 18:30, Prolearner1234
For each polynomial, determine the degree and write the polynomial in descending order. a. –4x^2 – 12 + 11x^4 b. 2x^5 + 14 – 3x^4 + 7x + 3x^3
Answers: 2
Mathematics, 21.06.2019 20:00, adriancastaneda
The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?
Answers: 1
Do you know the correct answer?
A testing engineer in a light bulb factory is planning a study to estimate the average life of a lar...
Questions in other subjects:
Mathematics, 10.12.2021 22:40
History, 10.12.2021 22:40
Mathematics, 10.12.2021 22:50
