1st box- sample mean or sample standard deviation 2nd box- less than or equal to

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1st box- sample mean or sample standard deviation 2nd box- less than or equal to or greater than 3rd box- is not or is Score: 0.5 of 1 pt 3 of 9 (9 complete HW Score: 83 a 9.3.7-T E Question Help Researchers conducted a study to determine whether Treatment Sham magnets are effective in treating back The results are shown in the table for the treatment (with magnets) group and the sham (or placebo) group. 0.39 The results are a measure of reduction in back pain. 0.54 Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population 1.33 s 0.65 standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts. Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that those treated with magnets have a greater mean reduction in pain than those given a sham treatment. Is it valid to argue that magnets might appear to be effective if the sample sizes are larger? V for those treated with magnets is Since the the sample mean for those given a sham treatment, it valid to argue that magnets might appear to be effective if the sample sizes are larger

Explanation / Answer

Solution:Great Job!

( Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that those treated with magnets have a greater mean reduction in pian than those given a sham treatment. )

Is it valid argue that magnets might appear to be effective if the sample size is larger?

Since the sample mean for those treated with magnets is greater than the sample mean for those given sham treatment, it is valid to argue that magnets might appear to be effective if the sample size is larger.

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