Twi-tailed hypothesis testing

Attempts 1.5 3 Keep the Highest 3/7 3. Two-talled hypothesis testing - step by step S-adenosyl methionine (SAM-e) is a naturally occurring compound in human cells that is thought to have an effect on depression symptoms. Suppose: that a researcher is interested in testing SAM-e on patients who are struggling with Atzheimer's. She obtains a sample of n = 30 patients and asks each person to take the suggested dosage each day for 4 weeks. At the end of the 4-week period, each individual takes the Beck Depression Inventory (BDT), which is a 21-item, multiple-choice self-report Inventory for measuring the severity of depression, The scores from the sample produced a mean of M - 26.2 with a standard deviation of s - 2.97. In the general population of Alzheimer's patients, the standardized test is known to have a population mean of u 28.1. Because there are no previous studies using SAM-e with this population, the researcher doesn't know how it will affect these patients; therefore, she uses a two-tailed single-sample t test to test the hypothesis, From the following select the correct null and alternative hypotheses for this study: OH SAM $ 28.1; H: SAMe > 28.1 O H: USAM - 28.1; HE SAME 28.1 O HUSAM + 28.1: HUSAM = 28.1 OH: MAM 28.1; H: MAM > 28.1 Assume that the depression scores among patients taking SAM e are normally distributed. You will first need to determine the degrees of freedom There are degrees of freedom. 1.714 2.069 23 24 0.685 1.319 0.585 1.318 2.500 2.492 2.807 2.797 1.751 2.064 25 0.684 0.684 1.316 1.315 1.708 1.706 26 2.060 2.056 2.052 2.048 2.787 2.279 2.771 2.763 27 1.314 1.703 28 1 313 1.701 1.699 29 1.311 2.756 0.684 0.683 0.683 0.683 0.681 0.679 2.045 2.042 2.485 2.479 2.473 2.467 2.462 2.457 2,423 2.390 2.355 2.326 30 1.310 1.697 2.750 40 1.303 1.684 2021 2.704 60 2.660 120 1.296 1.289 1.252 0.677 0.674 1.671 1.658 1.645 2.000 1.950 1.960 2.617 2.576 The critical scores (the values that define the borders of the critical region) are The estimated standard error is Thet statistics rejected in the critical region. Therefore, the null hypothesis Thet statistic conclude that SA-e has a significant effect on the moods of Alzheimer's patients Therefore, the researcher Save & Continue Grade R Now Continue without saving