1. When we reject the null hypothesis, we are saying that… we have proven the alternative...
1. When we reject the null hypothesis, we are saying that…
- we have proven the alternative hypothesis to be true
- we have proven the null hypothesis to be false
- our sample is too unlikely to have been produced by the null distribution
- our sample had a mean approximately the same as the population
- our sample had a standard deviation smaller than the population
Homework Answers
Answer:- option c) is correct.
1. When we reject the null hypothesis, we are saying that our sample is too unlikely to have been produced by the null distribution.
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1. When we reject the null hypothesis, we are saying that…
we have proven the alternative...
I. IF we do not reject the null hypothesis when the alternative hnthsinthen we have made...
I. IF we do not reject the null hypothesis when the alternative hnthsinthen we have made Type B error (b) Correct decision (e) Type I error (a) Type I1 error Use for Problems 2 and 3. The data below shows the top 10 teams' winning percentages (z) and powe ratings (u) for the 2013-2014 NCAA basketball season, according to vww.teasrankings.com bo 100.47 b 20.43 08330.694 2. Interpret the estimated slope of the line. (a) For a 1-game decrease in power...
11. If we reject the null hypothesis, what can we conclude, subject to the probability, α?...
11. If we reject the null hypothesis, what can we conclude, subject to the probability, α? Multiple Choice Reject the null with a probability, α, of making a Type I error. The alternative hypothesis is false. The null hypothesis is true. Both the null hypothesis and the alternative hypothesis are true. 12. The average cost of tuition and room and board at a small private liberal arts college is reported to be $8,500 per term. A financial administrator believes that...
If we reject a null hypothesis, should we state that we have proved the alternative hypothesis...
If we reject a null hypothesis, should we state that we have proved the alternative hypothesis to be true? Briefly explain why or why not.
z-test a sample for the null hypothesis using α = 0.05 as our threshold a) Given...
z-test a sample for the null hypothesis using α = 0.05 as our threshold a) Given a population with mean of 550 and variance of 100, what would be minimum sample mean to reject the null hypothesis if our sample size is 20? b) Given a population with mean of 550 and variance of 100, what would be maximum sample mean to reject the null hypothesis if our sample size is 20? c) Let’s assume the same population mean and...
All things being equal, when we have a two-tailed Alternative Hypothesis test it is easier to reject the Null Hypothesis...
All things being equal, when we have a two-tailed Alternative Hypothesis test it is easier to reject the Null Hypothesis (when compared to a one-tailed test). True False
A Type II error occurs in hypothesis testing when we _____________________________. fail to reject the null hypothesis...
A Type II error occurs in hypothesis testing when we _____________________________. fail to reject the null hypothesis and the null hypothesis is not true reject the null hypothesis and the null hypothesis is true fail to reject the alternative hypothesis and the alternative hypothesis is not true reject the alternative hypothesis and the alternative hypothesis is true
Identify the null hypothesis. alternative hypothesis, test statistic, decision about the null hypothesis and final conclusion...
Identify the null hypothesis. alternative hypothesis, test statistic, decision about the null hypothesis and final conclusion that addresses the original claim Various temperature measurements are recorded at different times for a particular city. The mean of 20 degrees is obtained for 60 temperatures on 60 different days. Assuming that the population standard deviation is 1.5 degrees, test the claim that the population mean is 22 degrees. Use a 0.05 significance level Hou = 22; H1 is u# 22 Test statistic:...
In testing hypotheses, if the consequences of failing to reject a null hypothesis that is actually...
In testing hypotheses, if the consequences of failing to reject a null hypothesis that is actually false are very serious, we should: A. Insist that the level of significance be smaller than the P-value Buse a very small level of significance. C. insist that the P-value be smaller than the level of significance. OD. use a very large level of significance. 1.5 QUESTION 36 A 99% confidence interval for the mean y of a population is computed from a random...
1. You want to test whether you can reject the null hypothesis that a population mean...
1. You want to test whether you can reject the null hypothesis that a population mean is greater than or equal to 10. To do this, you collect a random sample of size 500 from the population, and you calculate that the sample mean and sample standard deviation are 8.6 and s, respectively. Which of the following is true? a. If s is any value between 11 and 13, you can reject the null hypothesis at the 5% significance level....
On the basis of sample information, we either "accept the null hypothesis" or "reject the null...
On the basis of sample information, we either "accept the null hypothesis" or "reject the null hypothesis." True O False
I. IF we do not reject the null hypothesis when the alternative hnthsinthen we have made Type B error (b) Correct decision (e) Type I error (a) Type I1 error Use for Problems 2 and 3. The data below shows the top 10 teams' winning percentages (z) and powe ratings (u) for the 2013-2014 NCAA basketball season, according to vww.teasrankings.com bo 100.47 b 20.43 08330.694 2. Interpret the estimated slope of the line. (a) For a 1-game decrease in power...
Identify the null hypothesis. alternative hypothesis, test statistic, decision about the null hypothesis and final conclusion that addresses the original claim Various temperature measurements are recorded at different times for a particular city. The mean of 20 degrees is obtained for 60 temperatures on 60 different days. Assuming that the population standard deviation is 1.5 degrees, test the claim that the population mean is 22 degrees. Use a 0.05 significance level Hou = 22; H1 is u# 22 Test statistic:...
In testing hypotheses, if the consequences of failing to reject a null hypothesis that is actually false are very serious, we should: A. Insist that the level of significance be smaller than the P-value Buse a very small level of significance. C. insist that the P-value be smaller than the level of significance. OD. use a very large level of significance. 1.5 QUESTION 36 A 99% confidence interval for the mean y of a population is computed from a random...
On the basis of sample information, we either "accept the null hypothesis" or "reject the null hypothesis." True O False
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