If the null hypothesis is µ ≥ 200, then a two-tail test is being conducted.
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If the null hypothesis is µ ≥ 200, then a two-tail test is being conducted. True...
A hypothesis test is conducted to test the null hypothesis that the mean is less than 12. Use a 0.01 level of significance. What type of test is this? Right tail Two tail Left tail What is the critical value? 2.33 -2.33 1.78 correct answer is not given Suppose the test statistic was -2.50 What is the conclusion? Fail to reject Ho. There is not sufficent evidence to support the claim that the mean is less than 12. Reject Ho....
Please help with these 4 questions Check True/False: Q1- [0.5 point] A one-tail hypothesis test is used whenever the alternative hypothesis is express as = O True O False Q2-10.5 point) A two-tail hypothesis test is used when the alternative hypothesis is stated as or > with the rejection area on the same side as the inequality points. O True O False Q3- [0.5 point] If the p-value is greater than a, we do not reject the null hypothesis. Otherwise,...
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
You are designing a study to test the null hypothesis that µ = 0 versus the alternative that µ is positive. Assume that σ is 20. Suppose that it would be important to be able to detect the alternative µ = 4. Use α = 0.05. a) What sample size is needed to detect this alternative with power of at least 0.80? b) What sample size is needed to detect this alternative with power of at least 0.90? c) With...
In a two-tail test for the population mean, if we decided in favor of the alternative hypothesis when the null hypothesis is false, A. a Type II error is made B. a one-tail test should be used instead of a two-tail test C. a correct decision is made D. a Type I error is made In a one-tail test for the population mean, if we decide in favor of the null hypothesis when the alternative hypothesis is true, A. a...
For a one-tailed hypothesis test (upper tail) the p-value is computed to be 0.034. If the test is being conducted at 95% confidence, the null hypothesis Select one: a. is rejected. b. is not rejected. c. could be rejected or not rejected depending on the value of the mean of the sample. d. could be rejected or not rejected depending on the sample size.
In testing the null hypothesis Ho: 1-4 2 = 0, we use a a. right-tail test b. difference-tail test O c. left-tail test d. two-tail test
QUESTION 15 Suppose that a hypothesis test is conducted to test the null hypothesis, Ho: P, P2, using the sample data shown. Sample 1 n1 200 Xy 11 Sample 2 n2=100 X2= 8 Find the p-value for the test. 4020 .1011 0201 .0012 Click Save and Submit to saue and submit. Click Save All Answers to sae all answers.
1. In hypothesis testing, the hypothesis that is assumed to be true for the purpose of testing is called the hypothesis 2. (Circle the correct response) In hypothesis testing, critical values used to make a rejection decision regarding the null hypothesis are determined by the nature of the hypothesis test (two-tail vs. one-tail) and the d. significance level a. sample size b. population parameter c. target value 3. (Circle the correct response) In the process of hypothesis testing, the test...
You are testing the null hypothesis µ=150 versus the two tailed alternative. You reject the null hypothesis in favor of the alternative hypothesis. If in reality, µ does equal 150, you have made a : A. Correct Decision B. Type II Error C. Type I Error