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A study conducted by a research program found the 39.5% of college freshmen spent six or more hours a week studying or doing homework during their senior year in highschool. To verify these results, a random sample of 200 freshman was asked how many hours they studied a week during their senior year in high school. A total of 88 students from this sample responded what they studied six or more hours a week. Which of the following statements is correct?
in the week before and the week after a holiday there were 10000 total deaths and 4979 of them occcured in the week
an experiment can result in one or both of events a and b with the probabilities events a and b with the probabilities
Use two ideal op amps and resistors to implement the Vo = v1 +2v2 - 3v3 - 5v4 In each case find the input resistance seen by each of the signal sources supplying v1, v2, v3, and v4. Suggest at least two additional summing functions that you can re..
The urinary fluoride concentration (parts per million) was measured both for a sample of livestock grazing in an area previously exposed to fluoride pollution and for a similar sample grazing in an unpolluted region
A hypothesis test is performed to test the claim that a population proportion is greater than 0.7. Find the probability of a type II error, β, given that the true value of the population proportion is 0.72. The sample size is 50 and the significan..
Test the hypothesis that the annual income of corporate trainers in areas of more then 500,000 are significantly more than those in areas of less than 100,000. Use the 5% level of risk.
the number of automobiles that arrive at a certain intersection per minute has a poisson distribution with a mean of 5.
compare the mean for the heights of males which is 69.78 and the mean for the heights of females which is 67.08.
Check whether the following sample has been drawn from a Normal population. Calculate 95% Confidence interval for population Variance and standard deviation.
Explain how the null hypothesis is the basis of this calculation. Determine the value of the relevent test statistic and the corresponding p-value.
What critical value should the company officials use to determine the rejection region?
At a certain fast-food restaurants, 51% of customers order a chicken sandwich, 46% of the customers order French fries, and 21% of customers order both a chicken sandwich and French fries. What is the probability that randomly selected customer wi..
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