Mathematics, 28.04.2021 03:20 jdenty3398
Never forget that even small effects can be statistically significant if the samples are large. Of 148 small businesses, 106 were headed by men and 42 were headed by women. During a three-year period, 15 of the men's businesses and 7 of the women's businesses failed.
The proportions pˆ1 and pˆ2 of failures for businesses headed by women and businesses headed by men respectively, are?
The z test for the hypothesis that the same proportion of women's and men's business fail (using the two-sided alternative) has: ?
The sample proportions are quite close to each other and the test is very far for being significant.
Now suppose that the same sample proportions came from a sample 30 times as large. That is, 210 out of 1260 businesses headed by women and 450 out of 3180 businesses headed by men, fail.
A 95% confidence interval for the difference between the proportions of women?s and men?s businesses that fail, in the setting of (1) and (3) are,
What is the effect of larger samples on the confidence interval?
Answers: 3
Mathematics, 21.06.2019 17:10, shayneseaton
Find the value of x for which the lines are parallel.
Answers: 1
Mathematics, 21.06.2019 20:30, brandisouthern9
Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?
Answers: 1
Mathematics, 21.06.2019 22:40, raymond5799
Find the missing factor. write your answer inexponential form.9^2=9^4×
Answers: 1
Never forget that even small effects can be statistically significant if the samples are large. Of 1...
Mathematics, 13.11.2020 17:00
Mathematics, 13.11.2020 17:00