QUESTION 1 The dividing point between the region where the null hypothesis is rejected and the region where it is not rejected is known as the Critical Value O True O False
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- Question #: 15 In hypothesis testing, the decision rule is based on calculated versus critical value(s) for the A) population parameter. B) sample size. C) test statistic. D) power of the test.d.)The critical value is: e.)Can you reject the null hypothesis? Yes or No. f.)State your conclusion in the context of the problem:Which of the following accurately describes the critical region? A. sample means that are very unlikely to be obtained if the null hypothesis is true B. sample means that are very likely to be obtained if the null hypothesis is true C. sample means that are very unlikely to be obtained whether or not the null hypothesis is true D. sample means that are very likely to be obtained whether or not the null hypothesis is true
- QUESTION 2 When performing a Mann-Whitney U test one should always use the higher value of the calculated U values to compare to the critical U value while making the decision rule. True FalseA _____ critical region makes it _____ to reject the null hypothesis. Question 10 options: larger; harder larger; easier smaller; moderately difficult smaller; easierIn the problem below, a) state the null and the alternative hypothesis b) compute the test statistic, c) determine the critical value and the rejection region, and d) draw a conclusion. It is claimed that the average weight of babies at birth is 3.4kg. The average weight of a random sample of 30 newly born babies was determined. It was found out that the average weight was 3.1kg. Is there a reason to believe that the average weight of babies at birth is not 3.4kg? Assume that the population standard deviation is 1.1kg. Use 0.05 level of significance.
- If n1 = 4 and n2 = 3, how many degrees of freedom do you have? Also referring to problem 4, n1 = 4and n2 = 3, at the 0.10 level of significance, what is the critical value for a two tail test and is there evidence that µ1 > µ2?Question 1. If an original claim for some aspect of a population is µ = 5.00, the test statistic is t = +1.80, and the critical values are CV = –1.69, +1.69, would you reject or fail to reject the null hypothesis? (Pick one and justify your answer.) Question 2. If an original claim for a population is µ = 5.00 and the data leads to the initial conclusion to fail to reject the null hypothesis, which of the following is a correct statement of the final conclusion? There is sufficient evidence to warrant rejection of the claim that the mean is 5.00 The sample data support the claim that the mean is 5.00. There is not sufficient evidence to warrant rejection of the claim that the mean is 5.00. There is not sufficient sample evidence to support the claim that the mean is 5.00.A sample of 10 male and 10 female students were surveyed and their weights were recorded. The results are summarized in the table. Test for the hypothesis that the weight of female students is less than the weight of male students, at a=0.05. Male Female 70 55 62 56 72 55 69 65 54 50 73 50 83 46 93 47 72 104 74 49 a. What are the null and alternative hypotheses?b. What is the critical value? (4 decimal points)c. What is the test statistic? (4 decimal points)d. Reject or accept null hypothesis?