# Answer in Statistics and Probability for maya #231620

The purpose of a study by Luglie et al. (A-5) was to investigate the oral status of a group of patients

diagnosed with thalassemia major (TM). One of the outcome measures was the decayed, missing, and

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Answer in Statistics and Probability for maya #231620
Just from $13/Page filled teeth index (DMFT). In a sample of 18 patients the mean DMFT index value was 10.3 with a standard deviation of 7.3. Is this sufficient evidence to allow us to conclude that the mean DMFT index is greater than 9.0 in a population of similar subjects? Let a ¼ :10. Total problem Sample size, n=18 Sample mean, “\bar{x}=10.3” Sample standard deviation, s =7.3 We have to test whether the mean DMFT index is greater than 9 is a population of similar subjects. The hypothesis are: “H_0: \mu u22649 \\nnH_1: \mu >9” This is a right tailed test. Since the population standard deviation “\sigma” is unknown, we will use t-test. Test-statistic: “t=\frac{\bar{x}-\mu}{s/ \sqrt{n}} \\nnt= \frac{10.3-9}{7.3 / \sqrt{18}} \\nn= 0.7555” Degree of freedom df=n-1=18-1=17 P-value = P(“t_{df}” > test statistic) (since it is a right tailed test) “= P(t_{17}>0.7555)” = 0.23 (using t table, P-value is between 0.20 and 0.25) a) answer: test statistic = 0.7555 p-value = 0.23 b) If p-value < α => Reject H0. If p-value > α => Fail to reject H0. Here p-value > α (0.23>0.10) We accept H0. Answer: accept H0. Conclusion: There is not enough evidence to support the claim that “\mu>9.0.” # 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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