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Author Question: Find the probability that X is greater than 36 and less than 60. What will be an ideal ... (Read 102 times)

anshika

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on: Jun 24, 2018
Find the probability that X is greater than 36 and less than 60.
 
  What will be an ideal response?

Question 2

Based on the 95 confidence interval, can one conclude that there is a difference in the true average functioning time between the two models of battery packs before recharging? Justify your answer.
 
  What will be an ideal response?


irishcancer18

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Reply #1 on: Jun 24, 2018
Answer to Question 1

P(36 < X < 60 ) = P(-1.54 < Z < 1.54 ) = 0.4382 + 0.4382 = 0.8764

Answer to Question 2

Since zero is within the limits of the confidence interval, it is possible that the means are the same. Therefore one cannot conclude there is a difference in average functioning time between the two models of battery packs before recharging.


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anshika

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Reply #2 on: Jun 24, 2018
Thank you :)


irishcancer18

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Reply #3 on: Jun 24, 2018
Happy to help you


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