According to the document Current Population Survey, published by the U.S. Census Bureau, 30.4% of U.S. adults 25 years old or older in the year 2012 had ahigh school degree as their highest educational level. Use the normal approximation to the binomial to approximate the following probabilities. Complete parts (a)through (c).Click here to view page 1 of the table of areas under the standard normal curve.Click here to view page 2 of the table of areas under the standard normal curve.a. If 100 such adults are selected at random determine the probability that the number who have a high school degree as their highest educational level is exactly30.P(X=30) = (Round to four decimal places as needed.)

GIVEN DATA, p=0.304n=100we have to use normal approximation to the binomial distribution

Answered: According to the document Current…

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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Beef Consumption. According to Food Consumption, Prices, and Expenditures, published by the U.S. Department of Agriculture, the mean consumption of beef per person in 2011 was 57.5 lb. A sample of 40 people taken this year yielded the data, in pounds, on last year’s beef consumption given on the WeissStats site. Use the technology of your choice to do the following. a. Obtain a normal probability plot, a boxplot, a histogram, and a stem-and-leaf diagram of the data on beef consumptions. b. Decide, at the 5% significance level, whether last year’s mean beef consumption is less than the 2011 mean of 57.5 lb. Apply the onemean t-test. c. The sample data contain four potential outliers: 0, 0, 0, and 13. Remove those four observations, repeat the hypothesis test in part (b), and compare your result with that obtained in part (b). d. Assuming that the four potential outliers are not recording errors, comment on the advisability of removing them from the sample data before performing the…
Suppose the value of a stock varies each day from $10.82 to $23.17 with a uniform distribution. Find the third quartile, i.e. , 75% of all days the stock is below what value ?
In February 2021, Pew Research asked 2,596 random US adults what gives them meaning in life. 17% of respondents said, "occupation and career. We know that the proportion of the sample who answer "occupation and career" will vary in repeated sampling. In repeated sampling, the sample proportion, p-hat, has an approximately normal distribution with mean 0.17 and standard deviation 0.007. Use this information to answer the questions below. Show your work for each question and round all numeric answers to 3 decimal places. a) Find the probability that at least 0.175 of a random sample of 2,596 US adults respond "occupation and career b) Find the probability that between 0.159 and 0.179 of a random sample of 2,596 US adults respond "occupation and career c) What is the sample proportion that cuts off the lowest 10% all proportions for samples of size 2,596?**
Sixty-two percent of seniors attend a particular school in a school district. Assume 500 seniors within this school district are sampled. a. Can this distribution be approximated using the Normal model? Explain. b. Use the Normal approximation to estimate the probability that at least 290 senior students are enrolled at this particular school. c. Use the Normal model to estimate the probability that between 200 and 300 senior students who are sampled are enrolled at this particular school.
The normal distribution plays an important role in statistics. Write a briefdescription on each of the following aspects: i) the key features of a normaldistribution; ii) two variables which occur naturally as a normal distribution; iii) a variable where you would prefer to use the median as the measure of centraltendency.
"In a standard normal distribution, what is the mean? Options: A. -1 B. O C. 1 D. 2"
In February 2021, Pew Research asked 2,596 random US adults what gives them meaning in life. 17% of respondents said, "occupation and career. We know that the proportion of the sample who answer "occupation and career" will vary in repeated sampling. In repeated sampling, the sample proportion, p-hat, has an approximately normal distribution with mean 0.17 and standard deviation 0.007. Use this information to answer the questions below. Show your work for each question and round all numeric answers to 3 decimal places. a) Find the probability that at least 0.175 of a random sample of 2,596 US adults respond "occupation and career b) Find the probability that between 0.159 and 0.179 of a random sample of 2,596 US adults respond "occupation and career c) What is the sample proportion that cuts off the lowest 10% all proportions for samples of size 2.596?**
Find the values of mean and S.D. from the following data relating to a normal distribution. 10% of the items are under 40. 95% of the items are under 75.
The cities with the highest life expectancy are Nowhereville: 84.6 years; Somewhereopolis: 79.8 years; Kinch City: 79.8 years; Tortuga: 84.6 years; Euler Town: 78.5 years; Godelville: 84.6 years; Sirap: 90.1 years. Find the mean, the median, and the mode. ..... Find the mean. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The mean life expectancy is years. (Round to the nearest tenth as needed.) B. The mean does not exist. Find the median. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The median life expectancy is years. (Round to the nearest tenth as needed.) B. The median does not exist. Find the mode. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The mode life expectancy is years. (Round to the nearest tenth as needed.) O B. The mode does not exist.
The graph of the normal distribution resembles a "bell" curve. True SAMSUNG & False C $ % * 0
In a recent poll, 45% of survey respondents said that, if they only had one child, they would prefer the child to be a boy. Suppose you conducted a survey of 160 randomly selected students on your campus and find that 79 of them would prefer a boy. Complete parts (a) and (b) below. Click here to view the standard normal distribution table (page 1). LOADING... Click here to view the standard normal distribution table (page 2). LOADING... (a) Use the normal approximation to the binomial to approximate the probability that, in a random sample of 160 students, at least 79 would prefer a boy, assuming the true percentage is 45%. The probability that at least 79 students would prefer a boy is 3636. (Round to four decimal places as needed.)
If a set of observations is normally distributed, what percent of these differ from the mean by (a) more than 2.20? (b) less than 0.32g? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table.

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