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Author Question: The reliability of two types of machines used in the same manufacturing process is to be tested. The ... (Read 27 times)

madimontg

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on: Mar 25, 2023

The reliability of two types of machines used in the same manufacturing process is to be tested. The first machine failed to operate correctly in 90 out of 300 trials while the second type failed to operate correctly in 50 out of 250 trials.

a.Give a point estimate for the difference between the population proportions of these machines.
b.Calculate the pooled estimate of the population proportion.
c.Carry out a hypothesis test to check whether there is a statistically significant difference in the reliability for the two types of machines using a .10 level of significance.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by madimontg on Mar 25, 2023

DevinBrifm

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Reply #1 on: Mar 25, 2023
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madimontg

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Reply 2 on: Mar 25, 2023
YES! Correct, THANKS for helping me on my review

dawsa925

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Reply 3 on: Yesterday
Excellent

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