Answer in Statistics and Probability for Axl #268154

It has been known that a fixed dose of a certain drug results to an

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Answer in Statistics and Probability for Axl #268154
Just from $13/Page average increase of pulse rate by at least 12 beats per minute with a standard deviation of 5. A group of 20 patients given the same dose showed the following increases: 15, 12, 10, 8, 14, 15, 16, 11, 7, 13, 9, 10, 12, 11, 9, 10, 17, 14, 15, 7. Is there proof to show that this group has a lower average increase of pulse rate than the ones in general? Use 0.05 level of significance. Let the random variable “X” represent the average increase of pulse rate. The sample mean “(\bar{x})” of the data given above is given as, “\bar{x}=\sum(x)/n” where, “n=20”. “\bar{x}=235/20=11.75” and “\sigma=5” This question requires us to conduct an hypotheses test for the population mean. The hypotheses to be tested are, “H_0:\mu\geqslant 12” against “H_1:\mu\lt 12” Since the population variance is given, we apply the normal distribution to perform this test as follow s, The test statistic is given as, “Z^*=(\bar{x}-\mu)/(\sigma/\sqrt{n})=(11.75-12)/(5/\sqrt{20})=-0.25/ 1.118034=-0.2236068” The test statistic “(Z^*)” is compared with the table value at “\alpha=5\%” level of significance. The table value “Z_{0.05}” is obtained by entering the following command in “R”, > qnorm(0.05) [1] -1.644854 The output of -1.644854 is the table value, that is, “Z_{0.05}=-1.644854” and the null hypothesis is rejected if “Z^*\lt Z_{0.05}.” Since “Z^*=-0.2236068\gt Z_{0.05}=-1.644854”, we fail to reject the null hypothesis and conclude that there is no enough proof to show that this group has a lower average increase of pulse rate than the ones in general at “5\%” level of significance. What Will You Get? We provide professional writing services to help you score straight A’s by submitting custom written assignments that mirror your guidelines. Premium Quality Get result-oriented writing and never worry about grades anymore. We follow the highest quality standards to make sure that you get perfect assignments. Experienced Writers Our writers have experience in dealing with papers of every educational level. You can surely rely on the expertise of our qualified professionals. On-Time Delivery Your deadline is our threshold for success and we take it very seriously. We make sure you receive your papers before your predefined time. 24/7 Customer Support Someone from our customer support team is always here to respond to your questions. So, hit us up if you have got any ambiguity or concern. Complete Confidentiality Sit back and relax while we help you out with writing your papers. We have an ultimate policy for keeping your personal and order-related details a secret. Authentic Sources We assure you that your document will be thoroughly checked for plagiarism and grammatical errors as we use highly authentic and licit sources. Moneyback Guarantee Still reluctant about placing an order? Our 100% Moneyback Guarantee backs you up on rare occasions where you aren’t satisfied with the writing. Order Tracking You don’t have to wait for an update for hours; you can track the progress of your order any time you want. We share the status after each step. Areas of Expertise Although you can leverage our expertise for any writing task, we have a knack for creating flawless papers for the following document types. Trusted Partner of 9650+ Students for Writing From brainstorming your paper's outline to perfecting its grammar, we perform every step carefully to make your paper worthy of A grade. Preferred Writer Hire your preferred writer anytime. Simply specify if you want your preferred expert to write your paper and we’ll make that happen. Grammar Check Report Get an elaborate and authentic grammar check report with your work to have the grammar goodness sealed in your document. One Page Summary You can purchase this feature if you want our writers to sum up your paper in the form of a concise and well-articulated summary. Plagiarism Report You don’t have to worry about plagiarism anymore. Get a plagiarism report to certify the uniqueness of your work. Free Features$66FREE

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