The 68-95-99 Rule 3|The image on the left shows a normal distribution curvewith u = 50 and o = 4.What percentage of the data falls between 46 and58?Submit3842465054586234.1%34.1%13.6%13.6%2.1%2.1%Let's Do This!In the normal curve below, the shaded region (in colored Can you sketch the area under a normal curve between zblues) that represents an area between z = -0.6 and z=1.2.= 0 and z = 1.54?2=-0.6z= 1.2

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20°F to 45°F. A random sample of prices ($) for sleeping bags in this temperature range is given below. Assume that the population of x values has an approximately normal distribution. 80 75 65 35 120 105 30 23 100 110 105 95 105 60 110 120 95 90 60 70 (a) Use a calculator with mean and sample standard deviation keys to find the sample mean price x and sample standard deviation s. (Round your answers to four decimal places.) x=$ s=$
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How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20°F to 45°F. A random sample of prices ($) for sleeping bags in this temperature range is given below. Assume that the population of x values has an approximately normal distribution. 105 80 65 75 45 110 30 23 S = 105 95 105 60 LA 110 120 95 90 100 60 110 (a) Use a calculator with mean and sample standard deviation keys to find the sample mean price x and sample standard deviation s. (Round your answers to four decimal places.) x = $ 70 (b) Using the given data as representative of the population of prices of all summer sleeping bags, find a 90% confidence interval for the mean price μ of all summer sleeping bags. (Round your answers to two decimal places.) lower limit upper limit
The normal curve below shows a distribution of heights of players on a baseball team that has a mean of 70 inches and a standard deviation of 2 inches. Use this distribution to answer questions 7 through 12. 34% 34% 2.35% 13.5% 13.5% 2.35% 0.15% 0.15% 64 66 68 70 72 74 76 Height (inches) 7) What is the percentage of players whose height is between 70 and 74 inches? lO
14 26 38 50 62 74 86 Based on the graph of this normal distribution, a. The mean is b. The standard deviation is c. 68% of the data values are between and d. 95% of the data values are between and e. 99.7% of the data values are between and 00
5 Use the table below to find the percentage of data items in a normal distribution that lie a. below and b. above a z-score of −2.1. z-score -3.0 -2.9 -2.8 -2.7 -2.6 -2.5 -2.4 -2.3 -2.2 -2.1 Percentile 0.13 0.19 0.26 0.35 0.47 0.62 0.82 1.07 1.39 1.79 z-score -2.0 -1.9 -1.8 -1.7 -1.6 -1.5 -1.4 -1.3 -1.2 -1.1 Percentile 2.28 2.87 3.59 4.46 5.48 6.68 8.08 9.68 11.51 13.57 z-score -1.0 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 Percentile 15.87 18.41 21.19 24.20 27.43 30.85 34.46 38.21 42.07 46.02 a. The percentage of data items that lie below the z-score is ___%. b. The percentage of data items that lie above the z-score is ___%
How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20°F to 45°F. A random sample of prices ($) for sleeping bags in this temperature range is given below. Assume that the population of x values has an approximately normal distribution. 85 120 55 90 110 65 30 23 100 110 105 95 105 60 110 120 95 90 60 70 (a) Use a calculator with mean and sample standard deviation keys to find the sample mean price x and sample standard deviation s. (Round your answers to two decimal places.) x = $ s = $ (b) Using the given data as representative of the population of prices of all summer sleeping bags, find a 90% confidence interval for the mean price μ of all summer sleeping bags. (Round your answers to two decimal places.) lower limit $ upper limit $
100 103 106 109 112 115 118 Based on the graph of this normal distribution, c. 68% of the data values are between and d. 95% of the data values are between and and e. 99.7% of the data values are between 00 is
How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20°F to 45°F. A random sample of prices ($) for sleeping bags in this temperature range is given below. Assume that the population of x values has an approximately normal distribution. 55 75 65 60 90 65 30 23 100 110 105 95 105 60 110 120 95 90 60 70 (a) Use a calculator with mean and sample standard deviation keys to find the sample mean price x and sample standard deviation s. (Round your answers to four decimal places.) x=$ s=$ (b) Using the given data as representative of the population of prices of all summer sleeping bags, find a 90% confidence interval for the mean price ? of all summer sleeping bags. (Round your answers to two decimal places.) lower limit$ upper limit$

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The 68-95-99 Rule 3 The image on the left shows a normal distribution curve with u = 50 and a = 4. What percentage of the data falls between 46 and 58? Submit 38 42 46 50 54 58 62 34.1% 34.1% 13.6% 13.6% 2.1% 2.1% -1