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The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift. If X has an average value of 27 minutes, what is the probability that X is less than 32 minutes? (Do not round until the final step. Round your answer to 3 decimal places.)
A random sample of 51 observations was selected from a normally distributed population. The sample mean was x = 88.6 , and the sample variance was s2 = 38.2.
Find the mean and the standard deviation of the sampling distribution of x, and find an interval containing 95.44 percent of all possible sample mean returns.
Determine the EST,EFT,LST,LFT, and slack for each activity. Also determine the critical path and project completion time.
45 Human Resource major students and 25 Culinary Arts major students had arrived. What is the empirical probability that the next student to come will be a Human Resource Major?
question describing data measures of central tendencynbspnbspnbspnbspnbspnbspnbspnbsp number of days from order date to
You are the manager of the local Burger King branch in your town.
Information collected at a local university indicates that business majors enroll for an average (µ) of 10.65 credit hours per semester
Tourists by Month All the tourists visiting the Republic of Maldives from 2009 to 2013 were tallied. Then the average number of tourists per month.
a box contains 20 dvds 4 of which are defective. if two dvds are selected at random without replacement from this box
The other die has three faces with 0 spots and three faces with 6 spots. Find the probability distribution for the total number of spots Y on the up-faces when you roll these two dice.
1. in 2005 the average gpa for students was 3.15. a sample in 2008 showed that the average gpa for students was 3.46.
(a) Given this situation, state two equivalent expressions (in words) for the null hypothesis of independence in terms of proportions.
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