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12) The time it takes to process phone orders in a small florist/gift shop is normallydistributed with a mean of 6 minutes and a standard deviation of 1.24 minutes.a. What cutoff value would separate the 2.5% of orders that take the most time toprocess?b. What cutoff value would separate the 16% of orders that take the least time toprocess?c. What cutoff values would separate the 95% of orders that are in the middle of thedistribution with respect to processing time
approximately what proportion of the area under a normal curve with mean ? and standard deviation ? falls to the right
q1 suppose two fair six-sided dice are tossed and the random variable x is used to represent the sum of the numbers
A company has random drug test employee numbers range from 1 to6296. Find probability of selecting number less than 1000 and selecting a number divisible by 1000.
concern over the weather associated with elnino has increased interest in the possibility that the climate on earth is
In a paragraph explain the differences between the Independent Samples and Paired Samples T-Test. When do you use each? Purpose a research question that could be addressed using each test
The New York Times reported (L.J> Flynn, Tax Surfing, The New York Times, March 25, 2002, p. C10) that the mean time to download the home page for the internal Revenue Service (IRS) , was 0.8 second. Suppose that the download time was normally di..
Is there evidence of difference in mean life of bulbs produced by the two kinds of machines. What is your conclusion?
the random sample shown below was selected from a normal distribution.41010741a. construct a 99 confidence interval for
A doctor knows from experience that 20% of the patients to whom he gives a high blood pressure drug will have undesirable side effects. Assume the doctor gives that drug to ten of his patients
a report from the u.s. department of justice gave the following percent increases in federal prison populations in 20
Adult women in Japan have heights which are normally distributed with mean 158 centimeters and standard deviation 6 centimeters. Which country has the higher percentage of women taller than 167 centimeters?
Suppose the likelihood that any flight on Northwest Airlines arrives within 15 minutes of scheduled time is .90. We choose four flights from yesterday for study.
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