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Construct the indicated confidence interval for the difference between population proportions p1-p2. assume that the samples are independent and have been randomly selected. x1=10, n1= 42, x2=27, n2=47; Construct a 90% confidence interval for the difference between population proportions p1-p2.
a shipment of 30 tires arrived at a tire shop this past weekend and unknown to the manager eight of the tires are
How many packages should be sampled in order to be 90% confident of being within 0.9% of the actual population percentage of packages delivered damaged.
State the direction of the alternative hypothesis used to test that the demand function is downward sloping. Type gt (greater than), ge (greater than or equal to), lt (less than), le (less than or equal to) or ne (not equal to) as appropriate in the ..
What is the mean amount deducted from the total purchase amount? What is the standard deviation of the amount deducted from the total purchase?
Suppose it is desired to estimate the population mean number of miles with a margin of error of ± 2 miles at 95% confidence. Do the data provide this desired level of precision? What action, if any, would you recommend be taken?
1. a government watchdog association claims that 70 of people in the u.s. agree that the government is inefficient and
what does the p-value tell the business statistician especially in terms of the normal curve? if the p-value is smaller
Find the probability of an untrained dog performing as well as Maggie. Is it unusual for an untrained dog to do as well as Maggie?
What is the correlation, and why is it so high? Since all of the guessed weights were higher than the actual weights, does that influence the correlation at all?
the mode of a discrete random variable x with p.m.f. px is that value x for which px is largest the most probable x
Give a better segmentation than either the intensity based or the motion based segmentation. How does the brain combine the two different segmentations cues into a single segmentation?
The mean heart rate is 90 beats per minute with a standard deviation of 5. Find the 98% confidence interval for the true mean heart rate of all people with this untreated condition.
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