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In a population of size n=5 consisting of the age of each of them who are patients in a hospital. The age of each of them is given as x1=5, x2=7, x3=9, x4=11, x5=13.
(i) List all possible samples of size 2, which can be drawn with replacement
(ii) Calculate the population mean
(iii) Calculate the standard deviation
(iv) Find the mean of the sampling distribution of means (v) If the sampling is done without replacement, list all the possible samples of size 2.
Some food retailers propose subjecting food to a low level of radiation in order to improve safety, but sale of such "irradiated" food is opposed by many people. Suppose a grocer wants to find out what his customers think.
The professor randomly assigns students to groups of three to work on a project for the course.
Refer to Exercise 9.10. After the least squares line has been obtained, the table below (which is similar to Table 9.4) can be used for (1) comparing the observed and the predicted values of y, and (2) computing SSE.
Suppose Ho: px = py isbeingtested agrunst H1:Px *py oo the basis of two independent sets of 100 Bernoulli trials. If x , the number of successes in the first set, is 60 and y , the number of successes in the second set, is 48, what P-value would b..
Prepare journal entries to record the transactions in the firm's accounting records.
q1. researchers asked a sample of 50 1st grade teachers and a sample of 50 12th grade teachers how much of their own
At the end of the campaign, a random sample of 5,000 consumers shows that 19% of them now prefer California wines. Conduct the test at α = 0.05.
Provide an estimate of this difference. Explain why it is incorrect to use the two-sample t test to see if the means differ
When water taxi sank in the Baltimore Inner Harbor, an investigation revealed that the safe passenger load for water taxi was 3500 lbs. It was also noted that the mean weight of passenger was assumed to be 140 lbs.
An individual uses the following gambling system at Las Vegas. He bets $1 that the roulette wheel will come up red.
The weekly dollar demand and supply functions for tents, t, are given by the following respective formulas:
Prove in detail that the operator T with T (en ) = en/n, where {en } is an orthonormal basis of a Hilbert space, is continuous but not open and not onto. Show that its range is dense.
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