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A r.v. X is called a Laplace r.v. if its pdf is given by
fx(x) = ke ^(-lambda |x|) lambda>0, -infidenity< x < infidenty
where k is a constant.
(a) Find the value of k.
(b) Find the cdf of X.
(c) Find the mean and the variance of X.
Is there evidence that the population mean amount is different from 8.17 ounces? (Use a 0.05 level of significance.)
Assume that the average person in America weighs 150 pounds (μ). You want to determine whether colleges students weigh less than the average America, Following are the weights collected on a sample of colleges students: 120, 105, 166, 170, 145, 14..
Create a 90% confidence interval for proportion of all kernels that would not pop.
The simple random sample is n = 14, σ = 12.5 and the original population is normally distributed.
The alternative hypothesis is true. In this case the consumer advocacy group will have, A consumer advocacy group doubts this claim and tests the hypotheses
The country clerk wants to estimate the protection of retired voters who will need special election facilities. suppose a sample of 400 retired voters was taken. If 150 special election facilities, calculate an 80% confidence for the population pr..
Test at 5% and 1% whether the molder is operating satisfactorily.
Create a bell curve chart that shows the number of men needed per day for a 10,000 man hour job. The start date is 1/1/2008 and the end date is 6/1/2008.
The standard deviation is estimated to be 0.279. Use the 99% level of confidence.
If Procter & gamble sells about 20 million bars of soap per week, but the demand is not constant, and production management would like to get a better handle on how sales are distributed over the year. What might be helpful to the production and (..
The mean number of passengers per flight is 160 with a standard deviation of 20. The aircraft used for the route has 200 seats.
Determination of Nominal, Ordinal, Interval, Ratio.Temperature is an example of what level of measurement.
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