Question

Asked Apr 14, 2019

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A pharmcuticle company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of Mercury) for 9 patients before taking the new drug and 2 hours after taking the drug are shown in the table below. is there enough evidence support the company's claim?

Let D =(blood pressure before taking new drug)- (blood pressure after taking new drug).use significant levels of a=their 0.05 for the test. Assume that the systolic blood pressure levels are normally distributed for the population of patience both Before & After taking the new drug.

1.State the null and alternative hypothesis for the test.

2. Find the value of the standard deviation of the paired differences. Round to one decimal place.

3.compute the value of the test statistic. Round to three decimal places

4.determine the decision rule for rejecting the null hypothesis Ho. Round the numerical portion to three decimals.

5.make decision for the hypothesis test.

Step 1

__Solution__

Let *D* =(blood pressure before taking new drug) – (blood pressure after taking new drug) and *α* = 0.05 be the significance level.

**Step 1:**

The pharmaceutical company claims that its new drug reduces systolic blood pressure.

The null and alternative hypotheses can be stated as follows:

*H*_{0} : *µ*_{D} ≤ 0

*H*_{1} : *µ*_{D} > 0

Step 2

**Step 2:**

The standard deviation of the paired difference is obtained by

Step 3

The computation of standard de...

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