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A large university is interested in learning about the average time it takes students to drive to campus. The university sampled 238 students and asked each to provide the amount of time they spent traveling to campus. This variable, travel time, was then used conduct a test of hypothesis. The goal was to determine if the average travel time of all the university's students differed from 20 minutes. Find the large-sample rejection region for the test of interest to the college when using a level of significance of 0.05.
1. determine the number of ways in which a jury of 6 men and 6 women can be selected from a group of 14 men and 13
Test whether the relationship between the plan at retirement and residential area using Chi square test.
A work-study engineer times a certain operation, and discovers that the average time it takes is 10 minutes, but on 15% of occasions it takes more than 13 minutes.
What is the relationship between confidence intervals and hypothesis testing? How are they the same? How are they different?
based on all tax returns filed in 2001 the internal revenue service found the total deduction claimed on an itemized
a researcher was interested in determining whether incentives affect the response rate in surveys. a simple random
The probability that an individual is left-handed is 0.1. In a class of 30 students, what is the probability of finding at least five left-handers?
q1. for this assignment you will be provided with 2 clinical research questions on sample size and one published paper
desrcribe situations where a normal distribution provides a good approximatioon of the sampling distribution of the
suppose that y1 y2 y3 and y4 have a multinomial distribution with n trials and probabilities p1 p2 p3 and p4 for the
Assume the condition of Normality is met for the problem below. I also want to know the following elements: (Please do not use the Student t test, nor a Chi-square test) Two-tailed test ok?
a symphony orchestra has in its repertoire 30 haydn symphonies 15 modern works and 9 beethoven symphonies. its program
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