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Possibility of simple and compound events. A check of dorm rooms on a large college campuses revealed that 38% had refrigerators, 52 percent had TVs and 21 percent had both a TV and a refrigerator. What's the probability that a randomly selected dorm room has?
a) A TV but no refrigerator?
b) A TV or a refrigerator, but not both?
c) Neither a TV nor a refrigerator?
Morality Study for a group of four men, the probability distribution for the number x who live through the next year is as given in the accompanying table.
Determine the probability of fatal accident over lifetime? Describe your reasoning carefully. Suppose independent events. Why might the supposition of independence be violated?
Explain finding value of test statistic and P-value also understand the result. At the .01 significance level can we compute that the mean fare has increased.
You will investigate four different scenarios of population growth also decline in this town. Graph the model as well as investigate it by four different growth models.
The significance level of a statistical test is equal to the probability that the null hypothesis is true.
Assume P1 and P2 move simultaneously. Represent this game in normal form.
A busy landscaping supplies company sells wood chips for garden mulch. The mulch is sold by the cubic metre and delivered to households in a small truck.
LSAT scores are normally distributed, with a mean of 150 and s = 10.
In 1,000 samples, assuming that H 0 is true, how many times would you expect to commit Type I error if:
What is the probability that a particular driver had exactly two speeding violations?
For each lettered part, a through c, examine the two given sets of numbers. Without doing any calculations, decide which set has the larger standard deviation and explain why. Then check by finding the standard deviation by hand .
Construct a 95 percent confidence interval for the population mean. Is it reasonable that the population mean is 28 weeks? Justify your answer.
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