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Solve the problem. Round to the nearest tenth unless
Solve the problem. Round to the nearest tenth unless indicated otherwise.The amount of rainfall in January in a certain city is normally distributed with a mean of 4.9 inches and a standard deviation … read more
R.R. Jha
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if your not busy and can get to it that would be great. Thanks
if your not busy and can get to it that would be great. Thanks in advance for all your help. Find the P-value for the indicated hypothesis test with the given standardized test statistic, z. Decide wh… read more
Stevewh
Stevewh
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A nutritionist claims that the mean tuna consumption by a
A nutritionist claims that the mean tuna consumption by a person is 3.7 pounds per year. A sample of 70 people shows that the mean tuna consumption by a person is 3.3 pounds per yr with a standard dev… read more
Scott
Scott
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What is the indicated probabilty . A bag contains 5 red marbles
What is the indicated probabilty . A bag contains 5 red marbles 3 blue marbels, and 1 green marble… read more
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If in a (two tailed) hypothesis test, the p-value is 0.0339
If in a (two tailed) hypothesis test, the p-value is 0.0339 , what is your statistical decision if you test the null hypothesis at the 0.06 level of significance ? The test static in a two-tailed test… read more
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The manufacturer of a sports car claims that the fuel injection
The manufacturer of a sports car claims that the fuel injection system lasts 48 months before it needs to be replaced. A consumer group tests this claim by surveying a random sample of 10 owners who h… read more
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The average annual miles driven per vehicle in the United States
The average annual miles driven per vehicle in the United States is 11.1 thousand miles, with σ ≈ 600 miles. Suppose that a random sample of 41 vehicles owned by residents of Chicago showed that the a… read more
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22. Use the normal distribution to approximate the desired
22. Use the normal distribution to approximate the desired probability. Find the probability that in 200 tosses of a fair die, we will obtain at most 30 fives. (Points: 3) 0.1871 0.4936 0.2946 0.3229 … read more
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1. In a sample of 1720 home buyers, you find that 797 home
1. In a sample of 1720 home buyers, you find that 797 home buyers found their real estate agent through a friend. At a= 0.02, can you request the claim that 50% of home buyers find their real estate a… read more
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Question 1 . survey was conducted to measure the height of
Question 1 . survey was conducted to measure the height of men. In the survey, respondents were grouped by age. In the 20-29 age group, the heights were normally distributed, with a mean of 67.1 inche… read more
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Test the slope of the regression line, -46.292 + 15.240
Test the slope of the regression line, = -46.292 + 15.240 x of the following data. Use = .10 and se = 108.7. Advertising (x) Sales (y) 12.5 148 3.7 55 21.6 338 60.0 994 37.6 541 6.1 89 16.8 126 41.2 3… read more
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R.R. Jha
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The mean exam score for 45 male high school students is 19.8
The mean exam score for 45 male high school students is 19.8 and the standard deviation is 4.6. The mean exam score for 54 female high school students is 19.5 and the standard deviation is 4.2. A a=.0… read more
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You believe that the mean annual kilowatt hour usage of U.S
You believe that the mean annual kilowatt hour usage of U.S residential customers is less than 13,500. You find that a random sample of 31 residential customers has a mean kilowatt hour usage of 13,20… read more
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1) In one study of smokers who tried to quit smoking with nicotine
1) In one study of smokers who tried to quit smoking with nicotine patch therapy, 32 were smoking one year after the treatment, and 31 were not smoking one year after the treatment. Use a 0.10 signifi… read more
R.R. Jha
R.R. Jha
Bachelor's Degree
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#1) When 14 different 2nd-year med students measure the blood
#1) When 14 different 2nd-year med students measure the blood pressure of the same person, they got the same results: 138, 130, 135, 130, 120, 125, 120, 130, 140, 144, 143, 130, 130, 150 -Assuming tha… read more
muvee
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Hypothesis Testing for Mean (Small Samples) 3. A local tire
Hypothesis Testing for Mean (Small Samples) 3. A local tire store suspects that the mean life of a new discount tire is less that 39,000 miles. To check the claim, the store selects randomly 18 of the… read more
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Stevewh
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Greg ***STATISTICS***NEED ANSWERS BY 11 30PM EST 5/31/09
1. Suppose it is known that if you offer free samples of a product at least 53% of adults are more likely to buy the product. You interview a random sample of 50 adults. The results of the survey show… read more
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1) The Hudson Valley Bottling Company distributes root beer
1) The Hudson Valley Bottling Company distributes root beer in bottles labeled 32 ounces. The Bureau of Weights and Measures randomly selects 50 of these bottles, measures their contents and obtains a… read more
Scott
Scott
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