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A study was conducted to determine whether persons in suburban district II have a lower mean income than those in district I. Random samples were taken in each district with the following results (in $1000s). Determine whether the mean income in District II is below the mean income in District I
How many months must be sampled for analysis to be 99% confidence that the error in estimating the average monthly price of gasoline is at most $0.03.
The probability that the responder is a woman is 0.57. Find the probability that the response is in favor of the death penalty given that the responder is female.
The data comes from a set of scores on a 50 point Bilogy 101 test. 90 subjects took the test. The scores range from 12-50. How to make a simple frequency distribution table, using the raw data?
In other words, explain why, all else being equal, as sample size increases the likelihood of finding a statistically significant relationship increases.
A study of applicant requirements, job tasks, and performance expectations as part of a job analysis of student work-study jobs on a college campus of 2,000 students, where 1,500 are involved in the work-study program.
a recent study of 50 self service gasoline stations in the greater cincinnati northern kentucky metropolitan area
Question 1. The percent confidence interval is the range having the percent probability of containing the actual population parameter.
Discuss an example where you would use a test of hypothesis for in your professional life, personal life, education or politics. Provide sufficient details so that the context is clear and also discuss if the example involves:
At.05 significance level, is there a difference in mean number of calls per day between 2 employees? Compute the p -value?
If a vending machine will only accept coins weighing between 5.48g and 5.82g, what percentage of legal quarters will be rejected?
Draw and label distribution used and position of values found.
Standard deviation can be assumed known with Q=.28 What is the 95% confidence interval estimate of the mean undergraduate GPA for students admitted to the top graduate schools?
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