Suppose that the life span of a new calculator is normally distributed with mean 54.4 months and standard deviation 8.2 months. • The company guarantees that any calculator that starts malfunctioning within 36 months of the purchase will be replaced by a new one. What percentage of calculators manufactured by this company are expected to be replaced? • A random sample of 50 calculators is selected. What is the probability that the average lifespan of the calculators in this sample will be greater than 54 months?

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A: Mean = 20 Standard deviation = 6 Sample size = 4

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A: P(X>155)=1-Pz<155-12538=1-Pz<0.79=1-0.7852=0.2148

Q: suppose that the body lengths of adult male crested porcupines in approximately normally distributed…

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Q: Suppose that the height of women in Dakar, Senegal is normally distributed with mean 58 inches and…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

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Q: 1. Suppose the mean life span of a randomly selected Chihuahua dog is normally distributed with a…

A: Solution

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A: Mean = 67 Standard deviation = 5

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A:

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A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.