Let x be a random variable that represents the pH ofarterial plasma (i.e., acidity of the blood). For healthy adults, the mean of the x distribution is u = 7.4. A new drug for arthritis has been developed. However, It is thought that this drug may change blood pH. A random sample of 41 patients with arthritis took the drug for 3 months. Blood tests showed that x-bar = 8.5 with sample standard deviation 5 = 2.9. Use a 5% level of significance to test the claim that the drug has changed (either way) the mean pH level of the blood. a.) What is a? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two- tailed test? aC] HMS H1:_D The test is a test b.) identify the Sampling Distribution you will use. What is the value ofthe test statistic? The best sampling distribution to use is the distribution. The test statistic (z or tvalue) is = a c.) Find or estimate the Pvalue for the test. The p-value is = Select an answer v d.) Conclude the test. Based on this we will the null hypothesis. Question HJEJJL_ Messag e instructor__ ,, kg) Una poesiaitali...docx A V 2