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In a random sample of 22people, the mean commute time to work was 33.1minutes and the standard deviation was 7.3minutes. Assume the population is normally distributed and use a t-distribution to construct a 99%confidence interval for the population mean mu. What is the margin of error of mu?Interpret the results.
The confidence interval for the population mean mu is () ()
an aeroplane flies from a to b at the rate of 500kmhr and comes back from b to a at the rate of 700kmhr. what is the
Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.
farnum 1994 discusses a chrome plating process. small electric currents are run through a chemical plate that contains
1. determine the number of ways in which a jury of 6 men and 6 women can be selected from a group of 14 men and 13
The average service time appears significantly longer than 90 seconds. What is the actual average service time? What critical value should be used in the magazine"s hypothesis test?
What should be considered a relatively high price per share? What percentage of the companies has a price per share in this range? Which companies have a price per share in this range, and what is the price per share for each?
routine physical examinations are conducted annually as part of a health service program for the employees. it was
The current in a certain circuit as measured by an ammeter is a continuous random variable X with the following density function:
the amount of money deposited into a certain vending machine on a daily basis has approximately a normal distribution
Warren Road MacBurger that the mean waiting time was 2.75 minutes. At the 0.05 significance level, can we conclude that the mean waiting time is less than three minutes?
The professor plots a histogram of these several proportions. Should a Normal model be used to represent the sampling distribution of the proportion of tails?
1. epistasis is the control of a phenotype by two or more interacting genes. in a dominant epistatic model one gene can
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