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The data set of the diameters of the metal cylinders manufactured an automatic machine has n=29, mean of x=49.92 and, std. s = 0.16. Expected diameter of metal cylinder is µ = 50 Is there any doubt that machine is miscalibrated? Justify your answer!
Standard deviation of 8.3 minutes. Assuming normality, at the a = .05 level, is there enough evidence to show the mean oil change time is different?
Assume that the population of heights of male college students is approximately normally distributed with mean m of 68 inches and standard deviation s of 3.75 inches. A random sample of 16 heights is obtained.
question 20 cubic meters of hydrogen gas at 47 degrees celsius is heated under constant pressure to a tempature of 127
Are there any high leverage points or extraordinarily influential points? Briefly justify your answer. I. The Variance inflation factors are below. Are there any problems of multicollinearity?
there are two tennis courts.pairs of players arrive atrate3perhour and play for an exponentially distributed amount of
Find the combination of Model Alpha and Model Beta that maximizes the firm profit. What is firm's profit at this profit mix and shows the combinations of Model Alpha
Construct a 99% confidence interval estimate of the population proportion of accounts that would purchase the additional line if the handset were free.
you arrive at a bus stop at 800 a.m. knowing that the bus will arrive at some time uniformly distributed between 845
Nyobia had a population of 3 million in 1985. Assume that this country's population is growing continuously at a 5% annual rate and that Nyobia absorbs 40000 newcomers every year.
obtain the general solution of a non-homogeneous ode y2y-5y-6y100e3x 18e-x. verify your solutions using matlab.yyhyp
Decide between two stock investment choices. Determine the probability for each condition to make the investment even between the two.
use the fact that the standard normal distribution integrates to 1 to evaluate the following integral. i.e. useintegral
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