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(a) Two people are to be selected from a group that consists of 8 married couples. How many different choices are possible?
(b) If each choice is equally likely, what is the probability that the two people selected are married to each other? (Round your answer to three decimal places.)
Course grades Suppose a professor counts the final exam as being equal to each of the other tests in her course, and she will also change the lowest test score.
If there are 100 students in the class, use the central limit theorem to approximate the probability that the class average falls below 75.
Using the 5% significance level, test the null hypothesis that the mean drying times for all such fabric produced by the three companies are the same.
the us department of transportation maintains statistics for consumer complaints for 100000 airline passengers. in the
An issue that faces individuals investing for retirement is allocating assets among different investment choices. A study conducted 10 years ago showed that 65% of investors preferred stocks to real estate as an investment.
a roulette wheel has 38 slots numbered 0 00 and 1 to 36.the slots 0 and 00 are colored green 18 of the others are red
(i) Make a two-way table of "environment temperature" against "hatched or not." (ii) The researchers anticipated that eggs would hatch less well at cooler temperatures. Do the data support that anticipation?
Is it possible to be 99% certain that the display locations' mean sales are not equal? Conduct the appropriate follow-up analysis (Use = 0:01) to establish which means are significantly different. List all necessary assumptions and indicate which ..
a. What can we say about the shape of the distribution of the sample mean?
give the coefficient of xk in the expansion of x 1x99 where k is an integer between 0 and 99 inclusive. give
A pn junction operating in the forward-bias region with a current I of 1 mA is found to have a diffusion capacitance of 5 pF. What diffusion capacitance do you expect this junction to have at I = 0.1 mA? What is the mean transit time for this junc..
If a random sample of 25 observations is taken from a normal distribution with mean p and standard deviation 2, what is the probability that the sample mean
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