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Given a normal distribution with µ =50 and σ =4, what is the probability that a. X > 43?b. X < 42?c. 5% of the values are less than what X values?d. Between what two X values (symmetrically distributed around the mean ) are 60 % of the values?
Create a histograms for variable height-pull up Graph
A company claims the average time a customer waits on hold is less than 5 min. A sample of 35 customers has an average wait time of 4.78 min. Assume the population standard deviation for wait time is 1.8 min. Test the company claim at the α = 0.05 si..
question 1nbsp calculating a z-score and graphing a box plotnbsplook at the data under dietarysupp.nbsp the table gives
Graphical Solutions in Linear Programming have limited number of decision variables. What is the maximum number of decision variables used in graphical solutions?
the pdf for 3 parameter frechet distribution is ltbrgtfxa?a x-?-a-1 exp-x-?-a ltbrgtthen how we can prove the cdf for
Facebook CEO Mark Zuckerberg recently announced that it would be going public. The usual suspects, Morgan Stanley, JPMorgan Chase, and Goldman Sachs will be the lead underwriters. When Facebook was choosing underwriters, they were made varying..
H0: pi1- pi2 .01 at alpha =.05 where p1=.08, p2=.035, n1 = 200, n2 = 400. Indicate which test you are performing; show the test statistic and the critical values and mention whether one-tailed or two-tailed.
Can the company rely on the fact that the strength of the chemical is identical from batch to batch and from barrel to barrel and what is the mean strength of the chemical in these stored barrels? How prccisc is that estimate?
Let X be the sample mean of a random sample of size n from a uniform distributionon the interval [0, b], and let bb = 2X be an estimator of the upper endpoint b.(a) Demonstrate that bb is an unbiased estimator of b, and find the variance of th..
the westhouser paper company in the state of washington currently has an option to purchase a piece of good timber
What are the mean earnings of males and females in this sample? Does the regression result support the claim in the news and You decide to control for age (in years) in your regression results because older people, up to a point
A sample of 9 production managers with over 15 years of experience has an average salary of $71,000 and a sample standard deviation of $18,000.
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