A sample of 125 is drawn from a population with a proportion equal to 0.58. Complete parts a) through c) below.Click here to view page 1 of the cumulative standardized normal distribution table.Click here to view page 2 of the cumulative standardized normal distribution table......a) Determine the probability of observing 71 or fewer successes.P(Observing 71 or fewer successes) =|(Round to four decimal places as needed.)b) Determine the probability of observing 77 or fewer successes.P(Observing 77 or fewer successes) =(Round to four decimal places as needed.)c) Determine the probability of observing 65 or more successes.P(Observing 65 or more successes) =(Round to four decimal places as needed.)

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Answered: A sample of 125 is drawn from a…

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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New York City 10-km Run. As reported in Runner’s World magazine, the times of the finishers in the New York City 10-km run are normally distributed with mean 61 minutes and standard deviation 9 minutes. Let x denote finishing time for finishers in this race. a. Sketch the distribution of the variable x.b. Obtain the standardized version, z, of x.c. Identify and sketch the distribution of z.d. The percentage of finishers with times between 50 and 70 minutes is equal to the area under the standard normal curve between _______ and _______.e. The percentage of finishers with times less than 75 minutes is equal to the area under the standard normal curve that lies to the _______ of _______.
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The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 59 ounces and a standard deviation of 7 ounces. Use the Empirical Rule.Suggestion: sketch the distribution in order to answer these questions. a) 99.7% of the widget weights lie between ____and_____ b) What percentage of the widget weights lie between 52 and 80 ounces? c) What percentage of the widget weights lie between 52 and 80 ounces?
The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 41 ounces and a standard deviation of 8 ounces. Use the Empirical Rule and a sketch of the normal distribution in order to answer these questions. a) 95% of the widget weights lie between and b) What percentage of the widget weights lie between 17 and 57 ounces? c) What percentage of the widget weights lie above 33 ? Question Help: Video Submit Question
Sample heights of twenty students in a class in inches:60 62 62 63 64 64 65 65 66 66 66 67 68 68 69 70 70 72 73 74 a) Make a stem and leaf plot with split stems.b) What is the shape of the distribution?c) What is the mean? d) What is the standard deviation? e) Which is average is best; the mean or median?
a) calculate the mean (type in integer or decimal rounded to three decimal places as needed) b) median (do not round) c) determine the modes. Select the correct choice below, and if necessary, fill in the answer box to complete your choice. d) describe the shape of the distribution. For the purposes of this existence, consider the mean and the median to be “approximately equal” if their difference is less than 1. Choose the correct answer below.
Twelve professional gamers were asked their age (in years) when they first began playing their game of choice. The data is collected below. 11, 12, 11, 13, 9, 15, 17, 21, 14, 11, 14, 18 Give the standard deviation of this sample, rounded to two decimal places. A.) 13.83 B.) 4.17 C.) 3.31 D.) 3.46
For which sample size (n) and population parameter (p) can a normal curve be used to approximate the sampling distribution? A. n 30, p= 0.3 %3D O B. n 30; p= 0.6 O C. n= 15; p = 0.3 O D. n= 15; p 0.6
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