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NeverReady batteries has engineered a newer, longer lasting AAA battery. The company claims this battery has an average life span of 16 hours with a standard deviation of 0.7 hours. Your statistics class questions this claim. As a class, you randomly select 30 batteries and find that the sample mean life span is 15.7 hours. If the process is working properly, what is the probability of getting a random sample of 30 batteries in which the sample mean lifetime is 15.7 hours or less? Is the company's claim reasonable? (Round your probability to four decimal places.)
The company's claim is not reasonable because the probability that a sample of 30 batteries would have a lifetime of at most 15.7 hours is about _______________?
several Measures of Central Tendency (averages). We usually use the mean. Where would we use other measures, such as the mode or the median?
last fall a sample of n 30 freshman was selected to participate in a new 4-hour training program designed to improve
What was the Hellenistic age and how did it come to be? What are some special characteristics of Hellenistic cities, art, culture, thought, and achievements? What were some of the major contributions of the Hellenistic age that outlasted the Helle..
A loan application is received this morning. What is the probability that:
1 a sample of 100 elements produced a mean of 48 and a standard deviation of 8. the 99 confidence interval for the
Suppose that seven balls are selected at random without replacement from a box containing five red balls and ten blue balls.
Based on the sample referenced above, find a 95% confidence interval estimate for the proportion of the entire voter population who "approve".
How would you used these results to determine the probability that an employee would take between 10 and 21 days vacation?
Calculate an approximate sample size that we may use in this situation.please can you solve it in details with the steps
a baseball player would like to conduct an experiment to determine how the weight of his bat the speed of a pitch and
What is the probability that either of the company shows profit - Which residents are most happy about where they are actually living? Explain
Explain the similarities and the differences between a frequency distribution and a probability distribution.
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