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Education and Child Development
College studyabroad programs have great educational value, compel students to become more globally aware, and invite participants to learn about different nations and cultures. Some colleges sponsor several programs and have high participation rates. However, nationally, only 14% of all college students participate in a study-abroad program. Recent world events may have made more students leery of travel and life in another country.
In a random sample of 1200 graduating college students, 150 said they had participated in a study-abroad program. Is there any evidence to suggest the proportion of students participating in these programs has decreased? Use a = 0.05.
What is the probability that the sample proportion is more than 0.37?- Find a value of the sample size n such that the probability that the sample proportion is less than 0.40 is 0.95.
a regional director responsible for business development in the state of pennsylvania is concerned about the number of
In order to control costs, a company wishes to study the amount of money its sales force spends entertaining clients. The following is a random sample of six entertainment expenses (dinner costs for four people) from expense reports submitted by m..
It has been reported that the average US office worker receives 14 fax messages per day. For purposes of this exercise, we will assume that the daily number of fax messages is normally distributed with a standard deviation of 5.0 messages.
A report states that 40% of home owners had a vegetable garden. How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 4% with 95% confidence?
Then test to see whether it considerably varies from 0 [use alpha = 5%]. Don't forget to identify the null and alternative hypotheses.
Calculate the y intercept, a.- Calculate the slope, b.- Write the equation for the line.- Draw the line on an empty scatterplot, basing the line on predicted Y values for X values of 0, 1, and 18.
The sample mean would or would not be considered be considered unusual because it lies or does not lie within 1 standard deviation, 2 standard deviations, or 3 standard deviations of the mean of the sample means.
1. Develop histograms showing the distribution of rivet diameters from the original and new supplier. 2. Compute the sample means and standard deviations for the two sets of data.
1 a legislative committee consists of 13 democrats 7 republicans and 3 independents. a delegation of 3 is selected to
bar code 39 code 39 is a common bar code system that consists of narrow and wide barsblack separated by either wide or
the question isa smaple of 50 la crosse school district teachers found that 72 had a summer job. find each of of the
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