A recent sociological report states that university students drink 5.10 alcoholic drinks per week on average, with a standarddeviation of 1.3401. Suppose Jason, a policy manager at a local university, decides to take a random sample of 150 universitystudents to survey them about their drinking habits.Assuming the students' weekly alcohol consumption follows a normal distribution, determine the standard error of the meanalcohol consumption. Provide your answer with precision to two decimal places.Oy =

We have given that Mean = 5.10 Standard deviation, ? = 1.3401 Sample size, n = 150

Answered: A recent sociological report states…

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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in a test of a lifelong brand of tires , a survey revealed that the mean life was 35,000 mikes and the standard deviation was 7083 mikes. if the shape of the population distribution is known to be normal, approximately what percentage of the tires lasts less than 20834 miles ?
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The mean value of land and buildings per acre from a sample of farms is $1400, with a standard deviation of $200. The data set has a bell-shaped distribution. Assume the number of farms in the sample is 74. Use the empirical rule to estimate the number of farms whose land and building values per acre are between $1000 and $1800. round to nearest tenth
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Compute the standard deviation of the sampled proportions if p=.8 and n=50. Round to three places.
The average starting salary offer for anthropology majors who graduated in 2007 was $39,200. Assume that X, the starting salary offer for anthropology major, is normally distributed with a mean of $39,200 and a standard deviation of $2,550. Find the total area below a starting salary of $45,200. Be sure to express your answer as a percentage rounded to the second decimal place (e.g. xx.xx).
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Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 68 miles per hour, with a standard deviation of 3 miles per hour. Estimate the percent of vehicles whose speeds are between 65 miles per hour and 71 miles per hour. (Assume the data set has a bell-shaped distribution.) Approximately nothing% of vehicles travel between 65 miles per hour and 71 miles per hour.
A data set lists weights (lb) of plastic discarded by households. The highest weight is 5.63 lb, the mean of all of the weights is x = 2.316 lb, and the standard deviation of the weights is s = 1.087 lb. a. What is the difference between the weight of 5.63 lb and the mean of the weights? b. How many standard deviations is that [the difference found in part (a)]? c. Convert the weight of 5.63 lb to a z score. d. If we consider weights that convert to z scores between 2 and 2 to be neither significantly low nor significantly high, is the weight of 5.63 lb significant? a. The difference is lb. (Type an integer or a decimal. Do not round.) Clear all Check awer
According to a recent survey, the salaries of assistant professors have a mean of $41,700and a standard deviation of $5350. Assuming that the salaries of assistant professors follow a normal distribution, find the proportion of assistant professors who earn more than $43,000. Round your answer to at least four decimal places.

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