EBK NUMERICAL ANALYSIS
10th Edition
ISBN: 9781305465350
Author: BURDEN
Publisher: YUZU
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A market research firm used a sample of individuals to rate the purchase potential of a particular product before and after the individuals saw a new television commercial about the product. The purchase potential ratings were based on a 0 to 10 scale, with higher values indicating a higher purchase potential. The null hypothesis stated that the mean rating "after" would be less than or equal to the mean rating "before." Rejection of this hypothesis would show that the commercial improved the mean purchase potential rating. Use = .05 and the following data to test the hypothesis and comment on the value of the commercial.
Purchase Rating
Purchase Rating
Individual
After
Before
Individual
After
Before
1
6
5
5
3
5
2
6
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8
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7
7
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What are the hypotheses?H0: d Ha: d
Compute (to 3 decimals).Compute sd (to 1 decimal).
What is the p-value?The p-value is
What is your decision?
Why would you use a histograph or bar graph? Which would be better and why for the data shown.
Calculus lll
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- X MAT21 X MindTa X A 26308 X Answer X M9 | C X 10 EKU-- × E DNA S X H. pyle x C static/nb/ui/evo/index.html?elSBN=9780357038406&id=339416021&snapshotld=877369& CENGAGE MINDTAP nctions, Limits, and the Derivative In Exercises 15, 16, 17, 18, 19, and 20, refer to the graph of the function f and determine whether each statement is true or false. -3-2-1 4- 3+ y= f(x) 2 1+ x 1 2 3 4 5 6 AA aarrow_forwardex MAT21 X MindTa X A 26308 X Home X M9|C X 10 EKU-- × E DNA S X H. pylo x C Ch om/static/nb/ui/evo/index.html?elSBN 9780357038406&id=339416021&snapshotld=877369& CENGAGE MINDTAP : Functions, Limits, and the Derivative E 3 In Exercises 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, and 38, find the indicated one-sided limit, if it exists. 21. lim (2x+4) x+1+ Answer 22. lim (3x-4) x-1 23. lim x-3 x+2x+2 Answer 24. lim x+2 x1+x+1 1 25. lim x+0+ x Answer▾ 26. lim 1 x40X x-1 27. lim x+0+ x²+1 Answer 28. lim x + 1 x-2+ x2 -2x+3 $ 4 % 5 MacBook Pro A 6 27 & * ( 8 9 AA a searrow_forward5.12 A steel wire 300 feet long and 1½-½ inch in diameter weighs 0.042 #/ft. If the wire is suspended vertically from its upper end, calculate (a) the maximum tensile stress due to its own weight and (b) the maximum weight W that can be safely supported assuming a safety factor of three and an ultimate tensile stress of 65 ksi. a. The maximum tensile stress due to its own weight b. Maximum weightarrow_forward
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