Reference no: EM131008654
1. Using the data in Exercise 2, and assuming that the data come from a distribution that is Normally distributed,
a) Find a 95% confidence interval for the mean difference in page views from the two websites.
b) Is 0 within the confidence interval?
c) What does it say about the null hypothesis that the mean difference is 0?
2. Using the summary statistics in Exercise 3, and assum- ing that the data come from a distribution that is Normally distributed,
a) Find a 95% confidence interval for the mean difference in ages of houses in the two neighborhoods using the df given in Exercise 7.
b) Why is the confidence interval narrower than the one you found in Exercise 9?
c) Is 0 within the confidence interval?
d) What does it say about the null hypothesis that the mean difference is 0?
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Problem regarding the exercise equipment
: A leading manufacturer of exercise equipment wanted to collect data on the effectiveness of their equipment. An August 2001 article in the journal Medicine and Science in Sports and Exercise compared how long it would take men and women to burn 200..
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Find the slopes of the two tangent lines at the given point
: Consider Maclaurin's trisectrix x(t) = (t2 - 7)/2(1+t2), y(t) = t(t2 - 3)/(1+t2). Find the point on the curve where the curve crosses itself. Find the slopes of the two tangent lines at the point of self crosiing.
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Develop a level production plan for covolo diving gear
: Develop a level production plan for Covolo Diving Gear. What are the advantages and disadvantages of this plan? Could Covolo implement a pure chase plan, given the current capacity? Why? If sales continue to grow, what are the implications for pro..
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Confidence interval for the mean difference
: Using the summary statistics in Exercise 4, and assuming that the data come from a distribution that is Normally distributed, a) Find a 95% confidence interval for the mean difference in page views from the two websites.
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Confidence interval narrower
: a) Find a 95% confidence interval for the mean difference in ages of houses in the two neighborhoods using the df given in Exercise 7. b) Why is the confidence interval narrower than the one you found in Exercise 9? c) Is 0 within the confidence in..
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P-value of the statistic
: Using the data in Exercise 3, test the hypothesis that the mean ages of houses in the two neighborhoods is the same. You may assume that the ages of houses in each neighbor- hood follow a Normal distribution. a) Calculate the P-value of the st..
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Compute the sample variance and standard deviation
: A paper appearing in Animal Behaviour ("The Echolocation of Flying Insects by Bats" [1960]: 141-154) gave the following distances (in centimeters) at which a bat ?rst detected a nearby insect: 62 23 27 56 52 34 42 40 68 45 ..
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How far is triangle from the bottom
: A triangle with area of 30 sq. in. is cut form the corner of a square of side 10 in. If the centroid of the remaining region is 4 inches from the left side, how far is it from the bottom?
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Determining the degrees of freedom
: Find the P-value using the degrees of freedom from part b. (You can either round the number of df and use a table or use technology or a website). Find the P-value using the degrees of freedom from part d.
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