According to a recent article published by CollegeCalc, the proportion of 4-year colleges in the U.S. that are private is 50%. A high school senior looking at US News National College Rankings is sure that the proportion of colleges that are private is much less than 50% based on the colleges she has been considering. Using the information provided, conduct a one-sided hypothesis test.
1. Choose and state a significance level. Explain the meaning of the significance level.
Significance level = 0.05
Significance level is denoted by alpha. when probability rejecting
the null hypothesis then it is true
For, ex p value is 0.0021 at 0.05 significance level it means p value is less than 0.05 level so we reject the null hypothesis
According to a recent article published by CollegeCalc, the proportion of 4-year colleges in the U.S....
According to a recent National Association of Colleges and Employers (NACE) report, 47% of college student internships are unpaid. (Data extracted from “Paid Interns More Likely to Get Hired,” bit.ly/1JTIYuA.) A recent survey of 60 college interns at a local university found that 30 had unpaid internships. a. Use the five-step p-value approach to hypothesis testing and a 0.05 level of significance to determine whether the proportion of college interns that had unpaid internships is different from 0.47. b. Assume...
Based on a recent study, roughly 80% of college students in the U.S. own a smartphone. Is the proportion of smartphone owners lower at this university? Proportion of students who have a smartphone 78% (243 students) students with no smartphone 21% (67 students) State your hypotheses in symbolic form and in words. use a normal model to estimate the P-value probability. Verify that normality conditions are met. conduct the hypothesis test. Give your P-value and interpret its meaning as a...
1.A recent article reported that a job awaits only one in three new college graduates. (1 in 3 means the proportion is .333) A survey of 200 recent graduates revealed that 80 graduates had jobs. At the .02 significance level, we will conduct a hypothesis test to determine if we can conclude if a larger proportion of graduates have jobs than previously reported. What will be the value of our critical value? 2..A recent article reported that a job awaits...
1. Hypothesis Testing (4 pts) The National Institute of Mental Health published an article stating that in any one-year period, approximately 9.4% of American adults suffer from depression or a depressive illness. Suppose that in a survey of 2000 people in a certain city, 11.4% of them suffered from depression or a depressive illness. Conduct a hypothesis test to determine if the true proportion of people in that city suffering from depression or a depressive illness is more than the...
A recent study at a local college claimed that the proportion, p, of students who commute more than fifteen miles to school is no more than 15%. If a random sample of 275 students at this college is selected, and it is found that 55 commute more than fifteen miles to school, can we reject the college's claim at the 0.1 level of significance? Perform a one-tailed test. Then fill in the table below Carry your intermediate computations to at...
answer neatly and correctly
please!
A recent study at a local college claimed that the proportion, p, of students who commute more than fifteen miles to school is no more than 20%. If a random sample of 270 students at this college is selected, and it is found that 58 commute more than fifteen miles to school, can we reject the college's claim at the 0.05 level of significance? Perform a one-tailed test. Then fill in the table below. Carry...
A recent study at a local college claimed that the proportion, p. of students who commute more than fifteen miles to school is no more than 20%. If a random sample of 265 students at this college is selected, and it is found that 65 commute more than fifteen miles to school, can we reject the college's claim at the 0.1 level of significance? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at...
A recent study at a local college claimed that the proportion, p. of students who commute more than fifteen miles to school is no more than 15%. If a random sample of 255 students at this college is selected, and it is found that 53 commute more than fifteen miles to school, can we reject the college's claim at the 0.01 level of significance? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at...
A recent article reported that a job awaits only one in three (0.33) new college graduates. The major reasons given were an overabundance of college graduates and a weak economy. A survey of 200 recent graduates from your school revealed that 80 students had jobs. At the .01 significance level, can we conclude that a larger proportion of students at your school have jobs? A The Null Hypothesis is: a Job awaiting new college graduates is _______. b Job awaiting...
A recent article claimed that the mean wedding cost in the US is $28,400. A random sample of 44 weddings from this year was taken from the western New York region. Test, at the 5% significance level, if the mean cost of a wedding in Western New York is different than the national average. The costs of those weddings are in the Excel spreadsheet under the Files link, in the tab named Wedding costs. What is the value of the...