To increase in weight, a group of 6 patients treated with medicine A is of average weight 43.33 kgs and standard deviation 8.20 kgs. Second group of 8 patients from the same hospital treated with medicine B is of average weight 57.4 kgs and standard deviation 11.00 kgs. Find whether Medicine B increase weight at 10% significance level? Assume that the population distributions are normal with equal variance. a. The considered test is a (one/two) ______ -tailed test b. The test statistic t = ______ (round at two decimal places) c. The degrees of freedom (d.f.) = ______ (do not round up) d. The critical value of the test = ______ We (accept/reject) ______ the null hypothesis and conclude that the medicines Medicine B (increase / do not increase) ______ weight at 10% significance level
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The distribution of scores is normal with a one tail. This means that we are conducting a one-tailed test. Show more…
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You conduct a two-tail test at α = .05. To use the Distributions tool to find the critical values, you first need to set the degrees of freedom in the tool. The degrees of freedom are . The critical values (the values for t-scores that separate the tails from the main body of the distribution, forming the rejection region) are . Finally, since the t-statistic in the critical value, you the null hypothesis.
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