About 73% of the residents in a town say that they are making an effort to conserve water or electricity. One hundred residents are randomly selected. What is the probability that the sample proportion making an effort to conservewater or electricity is greater than 79%? Interpret your result. Assume the sampling distribution of sample proportions is a normal distribution. The mean of the sample proportion is equal to the population proportion and the standardpqdeviation is equal tonThe probability is(Round to four decimal places as needed.)

The given data is as follows:Population proportion of residents who are making efforts to conserve…

Answered: About 73% of the residents in a town…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The scores of individual students on the American College Testing (ACT), a college readiness assessment, have a Normal distribution with a mean of 18.6 and a standard deviation of 6.0. At Northside High, 36 seniors take the test. Assume the scores at this school have the same distribution as national scores. What is the mean of the sampling distribution of the sample mean score for a random sample of 36 students? 0 1 0 6
Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births. Click the icon to view the data table. The mean is u= girl(s). (Round to one decimal place as needed.) The standard deviation is o = e# girl(s). (Round to one decimal place as needed.) Table of numbers of girls and probabilities Number of Girls x 0 1 2 3 4 5 6 7 8 átv P(x) 0.004 0.034 0.117 0.218 0.278 0.217 0.102 0.027 0.003 D - X NiZ Next
Which of the following would you expect not to have a normal distribution? The actual weight of rice in a bag labeled as a 20 pound bag Scores on the NY state English Regents test. The delay, measured in minutes, of flights from La Guardia airport. The weights of eighth grade children in NYC schools
Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births. Click the icon to view the data table. The mean is u = girl(s). (Round to one decimal place as needed.) The standard deviation is o = girl(s). (Round to one decimal place as needed.)
In a normal distribution, what z-score cuts off the top 65% of the distribution?a. z = 0.7422b. z = 0.2578c. z =0.39d. z = -0.39
Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the standard deviation is 5. What is the probability of selecting a person with a score greater than Cody’s?
Please solve
The tourist bureau of the Caribbean Island survey a sample of 6 United States tourists as they left to return home. The tourist was asked how many days they spent on their visits. Their responses were as follows: 11,8,6,12,10,7 find the standard deviation of this sample of numbers.
Suppose six pet food stores in the area were surveyed, and the following data shows how many types of pet food each of them carries. 7,7,9, 9, 11, 11 Calculate the sample mean and the sample standard deviation. Round your answers to three decimal places. T = Number Number S=
Minister of Education Inese Puuce measured the English test scores of every child in the Grand Duchy of Vidzeme. Minister Puuce found that roughly the same number of kids got As and Fs, but very few children got Cs. Does she have a normal distribution or not? Why or why not?
The average production cost for major movies is 67 million dollars and the standard deviation is 19 million dollars. Assume the production cost distribution is normal. Suppose that 45 randomly selected major movies are researched. Answer the following questions. Give your answers in millions of dollars, not dollars. Round all answers to 4 decimal places where possible. For the group of 45 movies, find the probability that the average production cost is between 63 and 65 million dollars.
what was the age distribution of prehistoric Native America? Extensive , anthropological studies in the southwestern United states gave the following information about a prehistoric extended family group of 82 members on what is now a native american reservation. for this community, estimate the mean age expressed in years, the sample variance, and the sample deviation. For the class 31 and over, use 35.5 as the class midpoint. 39,16, 20,7

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