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A bowl contains 10 balls, of which 4 are red and 6 are white. Balls are randomly selected with replacement from the bowl until 4 red balls have been selected. Let X be the number of white balls drawn before the fourth red ball is selected. Calculate P(X = 6).
Is there evidence that the population mean is above $300, if X (bar) = $305.11 and s = $43.20?
1. a researcher sends a questionnaire to 6000 individuals. she gets back 5000 responses. the percentage of women among
Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to state whether or not the given r represents a significant linear correlation
Consider a random sample X1 ,X2 ,• • • , X,, from the Weibull distribution with p.d.f. f( x; 0, -r) = 0-rxi - 1e-0xr, 0 x oo, where O 0, 0 -r, zero elsewhere. (a) If -r is known, find the m.l.e. of 0.
Find out the regression equation Determine the value of Rsquare? Comment on value.
1. the daily flow rate of contaminant from an industrial plant is modeled by a normal random variable with a mean value
Is there evidence to suggest a difference in the mean waiting times at the four body shops?
Say whether or not R is a partial order and a total order on A. Show proof.
Find the maximum total allowable weight if we want a 0.975 probability that this maximum will not be exceeded when 16 males are randomly selected.
When 297 college students are randomly selected and surveyed, it is found that 126 own a car. Find a 99% confidence interval for the true proportion of all college students who own a car.
let x be a discrete random variable with possible values x -1012 and probability function fx kx3 0.15 for x -1012.a
consider the following probability distributiondemand 0 1 2 3 4probability .15 .30 .25 .15 .15partition
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