Calculus and Above

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Use the given degree of confidence and sample data to
Use the given degree of confidence and sample data to construct a confidence interval for the population mean μ. Assume that the population has a normal distribution.Thirty randomly selected students … read more
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For your initial post, create an example of an application
For your initial post, create an example of an application to calculate a confidence interval to estimate a population parameter and ask students for a solution (make sure your example works). Please … read more
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Find the confidence interval specified. Assume that the
Find the confidence interval specified. Assume that the population is normally distributed.Thirty randomly selected students took the calculus final. If the sample mean was 93 and the standard deviati… read more
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A New York charity recently did a fund raising campaign to
A New York charity recently did a fund raising campaign to support libraries. The following table gives the number of people who gave money at each fundraising level based on what region of the state … read more
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Salmon Weights: Assume that the weights of spawning Chinook
Salmon Weights: Assume that the weights of spawning Chinook salmon in the Columbia river are normally distributed. You randomly catch and weigh 18 such salmon. The mean weight from your sample is 22.2… read more
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Salmon Weights: Assume that the weights of spawning Chinook
Salmon Weights: Assume that the weights of spawning Chinook salmon in the Columbia river are normally distributed. You randomly catch and weigh 17 such salmon. The mean weight from your sample is 22.2… read more
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Sleep – College Students: Suppose you perform a study about
Sleep – College Students: Suppose you perform a study about the hours of sleep that college students get. You know that for all people, the average is about 7 hours. You randomly select 35 college stu… read more
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Student Debt – Vermont: The average student loan debt of a
Student Debt – Vermont: The average student loan debt of a U.S. college student at the end of 4 years of college is estimated to be about $22,300. You take a random sample of 131 college students in t… read more
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In a random sample of seven ​people, the mean driving
In a random sample of seven ​people, the mean driving distance to work was 22.7 miles and the standard deviation was 7.7 miles. Assume the population is normally distributed and use the​ t-distributio… read more
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In a random sample of seven ​people, the mean driving
In a random sample of seven ​people, the mean driving distance to work was 22.7 miles and the standard deviation was 7.7 miles. Assume the population is normally distributed and use the​ t-distributio… read more
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Question 1 Assume that the weight loss first month
Question 1 Assume that the weight loss for the first month of a diet program varies between 6 pounds and 12 pounds, and is spread evenly over the range of possibilities, so that there is a uniform dis… read more
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5. Of 84 adults selected randomly from one town, 62 have health
5. Of 84 adults selected randomly from one town, 62 have health insurance. Find a 90% confidence interval for the true proportion of all adults in the town who have health insurance. A. 0.626… read more
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I Calculated The Sample Mean For 12 Randomly Selected High
I calculated the sample mean for 12 randomly selected high school seniors' test scores. The mean was 908.3 and the sample standard deviation was 305.4. Can you construct a 99% confidence interval for … read more
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a random sample of four microwave ovens, the mean cost was
a random sample of four microwave ovens, the mean cost was &85.00 and the standard deviation was $13.50. The 90% confidence interval for the population mean u is (_,_) (round to two decimal places as … read more
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A principal at a school randomly selected six students to take
A principal at a school randomly selected six students to take an aptitude test. Assume that the population has a normal distribution (so that all the hypotheses that allow you to construct confidence… read more
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A worker randomly selects 16 packages from the mail. The sample
A worker randomly selects 16 packages from the mail. The sample has a mean weight of 13.5 lbs and a population standard deviation of 3.21 lbs. The weights of all packages are normally distributed. a. … read more
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16. In a survey of 630 males ages 18-64, 391 say they have
16. In a survey of 630 males ages 18-64, 391 say they have gone to the dentist in the past year. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and com… read more
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1.Assume that the weight loss for the first month of a diet
1.Assume that the weight loss for the first month of a diet program varies between 6 pounds and 12 pounds, and is spread evenly over the range of possibilities, so that there is a uniform distribution… read more
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