Elementary Statistics
Elementary Statistics
3rd Edition
ISBN: 9781260373561
Author: Navidi, William
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 15.2, Problem 16E
To determine

To find:Whether the median cost per load for high efficiency detergents differs from the median cost per load for standard detergent.

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The following data are from an experiment on carnations. The explanatory variable is the amount of inorganic bromine (micrograms per milliliter) in a plot of standard size. The response variable is the average number of flowers per carnation plant for the 30 plants grown in the plot. Find the change in number of flowers per plant given an increase in 1 µg per mL of inorganic bromine. Amount of bromine Average no. of flowers Select one: O a. -0.216 O b. 0.216 O c. O d. -3.81 4.04 3 3.2 4 2.9 6 3.7 7 2.2 8 1.8 10 2.3 12 1.7 15 16 0.8 0.3
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We want to do a comparison of cow's milk with plant-based milk as far as nutrition is concerned. Assume that we are interested in comparing the mean amount of protein in an 8-ounce glass of cow's milk with the mean amount of protein in an 8-ounce glass of almond milk. We take a large sample of n1 = 50 8-ounce glasses of cow's milk and get a sample %3D mean amount of protein of 7.8 grams with a sample standard deviation of 2.4 grams. We take an independent large sample of n2 = 50 8-ounce glasses of almond milk and get a sample mean amount of protein of 5.2 grams with a sample standard deviation of 2.2 grams. %3D Assume that you are asked to construct a 95% confidence interval for the difference between the mean amount of protein in an 8-ounce glass of cow's milk and the mean amount of protein in an 8-ounce glass of almond milk. What is the correct number of degrees of freedom for the t* multiplier for this confidence interval? Remember that we are using the simplest method for…

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Elementary Statistics

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