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The route used by a certain motorist in commuting to work contains two intersections with traffic signals. The probability that he must stop at the first signal is 0.45, the analogous probability for the second signal is 0.55, and the probability that he must stop at at least one of the two signals is 0.60. What is the probability that he must stop
a) At both signals?
b) At the first signal but not at the second one?
Assume you have the following data: Ho: u = 2,450, S = 400, n = 100, and X = 2,300. Conduct a hypothesis test at the .01 significance level.
Determines the sample mean outer diameter to be 1.002 inches with a standard deviation of 0.003 inch. Calculate the process capability index for this example.
Evolutionary theories often emphases that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking - even if they are not exposed to the usual pa..
A normal distribution with a mean of 33 oz. and a standard deviation of 0.8 oz. What proportion of packets are underweight (i.e., weigh less than 32 oz.)?
30 said that they planned to work in a rural community. Find a 95% confidence interval for the true proportion of all medical students who plan to work in a rural community.
Using Excel or any Regression Program, please run the sold price as a function of Lot Sqt, BR, and Age - also bring the computer output of the Regression.
(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.
In a sample of 200 women, 144 of them said they were in debt. Test the claim that women are in deeper debt than men, at a=0.01.
A university reports that the middle 50% of the SAT I math scores of its students were between 565 and 690, with half the scores above 605 and half below. What SAT I math scores would be considered outliers for that university?
a researcher wishes to compare the effect of the rate of stepping on heart rate in a step-aerobics workout. a
A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop. What is the margin of error?
the anxiety general stress test angst has been designed to gauge the level of psychological stress management
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