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Q1) Life span of battery is normally distributed; with mean of 2400 hours and standard deviation of 40 hours .What percent of batteries have life span that is more than 2470 hours? Would it be unusual for a battery to have a life span which is more than 2470 hours? Describe your reasoning
What percent of batteries have a life span that is more than 2470 hours
Approximately ......% of batteries have a life span which is more than 2470 hours
Would it be unusual for a battery thave a life span that is more than 2470 hours? Describe your reasoning
a) It is unusual for battery to have a life span that is more than 2470 hours as the z-score is within 2 standard deviations of mean.
b) It is unusual for battery to have a life span that is more than 2470 hours as the z-score is not within 2 standard deviations of mean.
c) It is not unusual for battery to have life span that is more than 2470 hours as the z-score is not within 2 standard deviations of mean.
d) It is not unusual for a battery to have life span that is more than 2470 hours as the z-score is within 2 standard deviations of mean.
Based on this sample information find out what percent of variation in starting salaries is described by GPA, and find out the equation that would forecast salary from GPA. Give a scatter plot.
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Be sure the appropriate assumptions and conditions are satisfied before you proceed.
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