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1. Let Y1 <>Y2 < ·="" ·="">·<>Y5 be the order statistics of a random sample of size . 5 from the distribution having p.d.f. f( x) = exp [-(x - 9)/ P]jp, (J <>x <>oo, zero elsewhere. Discuss the construction of a 90 percent confidence interval for P if O is known.
2. Three independent random samples, each of size 6, are drawn from three normal distributions having common unknown variance. We find the three sample variances to be 10, 14, and 8, respecti vely.
(a) Compute an unbiased estimate of the common variance.
(b) Determine a 90 percent confidence interval for the common variance.
Ten students in a graduate program were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0.
Standard deviation of $1.2 million in 2009. Suppose a sample of 100 major league players was taken. What was the standard error for the sample mean salary?
On average, 8% of the subscribers respond to the survey. Of the 8% who respond, an average of 53% say they will renew. Sample and Population.
Five persons donate blood at the clinic on a particular day. Find the probability that at least one of the five does not have Rh+ blood.
the mean temp in la is 66.3 degrees f with a standard deviation of 8 degrees f. the temp readings are normally
Do these data indicate that the population mean percentage increase in corporate revenue is greater than the population mean percentage increase in CEO salary?
ABC Manufacturing has six machines that perform particular task. Breakdowns happens frequently for this machine. Past records indicate that the number of breakdowns that happen each day is described by the probability distribution seen below:
Using the results, describe the effect of an outlier or extreme value on the confidence interval.
the addition of a new accelerator is claimed to decrease the drying time of latex paint by more than 4. several test
Assuming the weight of cereal is normally distributed, determine the likelihood that a package will contain more that 12.2 ounces?
What is the probability that a randomly chosen U.S. adult invests in stocks, given that s/he invests in fixed income instruments? Round your answer to decimal places.
Draw a relative frequency histogram to describe the distribution of penny ages. How would you describe the shape of the distribution?
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