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Carter Motor Company claims that its new sedan, the Libra, will average better than 21 miles per gallon in the city. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical terms.
suppose that 12 observations are drawn from a normal population. the observations are 15 912 11 8 12 11 7 15 9 6 and
What can you conclude from Chebyshev's theorem about the percentage of adults in the town whose heights are between 57.3 and 77.7 inches? Please show work.
The university police department must write, on average, five tickets per day to keep department revenues at budgeted levels. Suppose the number of tickets written per day follows Poisson distribution with a mean of 9 tickets per day.
In the data collected for construction of c chart, the average number of defects per unit of output is c = 7.5. Discuss the 3-sigma upper and lower control limits for the control chart?
1 an open label study where participant are aware of the treatment they are taking is conducted to assess the time
the ages of 32 people who signed up for a one year membership at gym last month are shown in the table below.
Assign probabilities to the sample points and then find the probability that the first envelope purchased contains less than $100.
Sales in hundreds of dollars over a five-day period and determine whether differences between the two groups are statistically significant.
If you are told a population has a mean of 25 and a variance of 0, what must you conclude? a) Someone has made a mistake. b) There is only one element in the population.
The "average" (mean) tire wore out at 41,000 miles, and the standard deviation was 4000 miles. Approximately what percent of the tires are likely to wear out before 40,200 miles?
given the situation described identify the type of sampling involved. a local library polls every 9th customer about
utility analysis is a sophisticated theoretical approach to decision-making. list a few of your personal decision
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