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An urn contains 4 red and 6 blue balls. Suppose that 8 balls are selected at random and with replacement. What is the probability that the first 6 are red and the rest are blue?
What are the degrees of freedom of the t test statistic when testing whether the number of customers who make purchases affects weekly sales and what is the value of the standard error of the estimate?
The radius of the hole and the radius of the shaft. Let the random variable X denote the clearance, in millimeters. The probability density function of X is?
the go transportation system of buses and cumuter trains operates on the honor system. train travers are expected to
Calculate the adjusted seasonal factors and calculate the payoff and determine the decision the company should make using each of the decision making under certainty criterion
If the probability of getting caught copying someone else's exam is .1, find the probability of not getting caught in three attempts. Assume independence.
State the alternative hypothesis that would be used to determine if Brand A has a higher proportion of defective smoke detectors than Brand B. Calculate the test statistic for determining if a difference exists between the failure rates of the two..
in order to compare the means of two populations independent random samples of 400 observations are selected from each
Now assume that θ2 > 0 (with probability 1), and let δ1 hat be the Bayes estimator of 1/θ2 under the setup above. Show that δ1δ2 hat is the bayes estimator of θ1/θ2 , given x = (X1, X2).
the lenght of time x to complete a standard achievement test is approximately normally distributed with a mean of 58
an exit poll of 1000 randomly selected voters found that 515 favored candidate a. is the race too close to call? answer
In CaliforniaSpeeding.jmp are recorded speeds (in miles/hour) of a randomly selected sample of cars traveling on a section Highway 405 in Los Angeles (based on data from Sigalert)
The proportion p1 of all imported autos sold to 25-40 age group is greater than or equal to the proportion p2 of imported autos sold to over 40 age group?
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