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There is a 0.05 probability of thunderstorms in a major U.S. city. If there is a thunderstorm in that city, the probability is 0.28 that a flight departing that major city will be late. However, if the weather is clear in that major city, the probability is only 0.03 that a flight departing from that city will be late. If a flight departing from that major city arrives late in its destination city, what is the probability that there was a thunderstorm in that major departure city?
A. 0.33
B. 0.014
C. 0.043
D. 0.93
What was the success probability of each O-ring?
Similar survey of student population 10 years ago found that coffee shop was favoured by 20% of students, and pizza and hamburger were each preferred by 40% of the students. Determine the expected frequencies for chi-square test.
Determine the expected market return on $ 20,000 if the expected return on asset is 20%, its beta is 1.5, and the risk free rate is 5 percent?
Using one mean t test to determine whether or not to support the claim - hypothesis test that WORKS THE SAME as the z-test
The state wanted to see how three different math classes compared, so they gave a standardized test to all the students. Given the following results
(a) Use the steps of hypothesis testing, (b) figure the effect size for the study; and (c) explain your answers to (a) and (b) to someone who has never had a course in statistics.
A prison official wants to estimate the proportion of cases of recidivism. In examining 250 convicts there are 65 cases. with 99% confidence interval what is the range? How do you figure this type of problem?
Do you think the state has any intention of ever stopping the lottery, given the fact that the state relies on it to bring millions of dollars into its treasury?
In an experiment in which a die was rolled 188 times it was counted up how many times each face came up. The results are as follows:
In a group of seven adult friends, what is the probability that: a) no one has done a one-time fling?
Conduct a one-tailed hypothesis test for the mean at the .025 significance level. State the null and alternative. State the critical value. Draw a diagram. Provide the computation of the test statistics. State your decision in terms of the null hy..
Determine the minimum sample size to construct a 90% confidence interval for the population mean. Assume the population standard deviation is 1.2 years.
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