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In a recent survey of 200 Art students, 163 of them indicated that they would rather be poked in the eye with a sharp stick rather than take a statistics class. At a significance level of 0.01, test the hypothesis that more than 75% of art students would rather be poked in the eye with a sharp stick.
Find that the mean weight in the sample is 308 pounds.The standard deviation is 23. Using significance level of .01 test the null hypothesis using 5-step procedure.
a club has 200 members 45 of whom are lawyers 38 of the memebres are liars while 132 are neither lawyers nor liars.
A new group comes along and that only has 5 people. Their weights are also measured initially and after 9 weeks. What would be the most accurate methodology for determining the percentage of weight loss for this new group?
When we say we have a confidence level of 95%, what do you think our "margin of error" is? If we move the level of confidence from 95 to 99%, what will happen to our margin of error? What will happen to the width of our confidence interval?
Three consecutive even integers are such that the square of the third is 76 more than the square of the second. Find the three integers.
a brand of television has a lifetime that is normally distributed with a mean of 7 years and a standard deviation of
dilbert decides he needs a new job. he begins working at a computer repair store fixing laptops desktop computers and
How much should you be willing to pay for this deal? Do you think you would actually pay that much? Why? Expected Value:? Pay it? Why?
determine the p-value in each case and decide whether at the 5 significance level the data provide sufficient eveidence
for the high school outreach project that i direct i would like to know if we are having any impact on the high school
The five year surival rate for Caucasians for all forms increased from 37% in 1960 to 58% now. Express this change in two ways (1) as an absolute difference in terms of percentage points and (2) as a relative difference in terms of percent.
A sample of 20 pages was taken without replacement from the 1,591-page phone directory Ameritech Pages Plus Yellow Pages On each page, the mean area devoted to display ads was measured (a display ad is a large block of multicolored illustrations, map..
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