Problem #2: A current area of research interest is the familial aggregation of cardiovascular risk factors in general, and lipidlevels in particular. Suppose that it is known that the national average cholesterol level in children is 175 mg/dL.A group of men who have died from heart disease within the past year are identified, and the cholesterol levels of42 of their offspring are measured. The average cholesterol level of the offspring is found to be 181.6 mg/dL withstandard deviation 28.8 mg/dL.Problem #2(a):Problem #2(b):Problem #2(c):At a = .06, can it be concluded that the average cholesterol level of children whose father died from heart diseaseis higher than the national average?(a) Find the critical value.(b) Find the value of the test statistic for the above hypothesis.(c) Find the p-value.(d) What is the correct way to draw a conclusion regarding the above hypothesis test?critical value (correct to 2 decimals)test statistic (correct to 2 decimals)p-value (correct to 4 decimals)4

Answered: Image /qna-images/answer/209c76b6-7f7a-43ba-ac68-51ba50da2233.jpg

Answered: Problem #2: A current area of research…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Research Question 1: Is there a relationship between scores on the Combat Exposure Scale (CES) (Keane et al., 1989) and the Davidson Trauma Scale (DTS) (Davidson, 1997) in a sample of 200 combat veterans? Suppose you run the study, and the results come out with a p value of .02. What can you conclude about the relationship between the scores on these two measures?
Question 7: A research team is interested in the effect of Parent-Child Interaction Therapy (PCIT) in reducing children’s disruptive behaviors for children with disruptive behavior disorders (DBD). The research team recruited 12 families with a child with DBD and interviewed the parents about the number of disruptive behaviors the child has at home. After three weeks' therapy, the research interviewed again about the child's disruptive behaviors. The disruptive before and after the therapy is list below. Test the researcher’s hypothesis at a 0.05 significant level. List 4 steps. Family Disruptive behaviors before PCIT Disruptive behaviors after PCIT 1 3 2 2 4 4 3 5 3 4 5 3 5 6 5 6 5 3 7 5 5 8 7 6 9 8 5 10 5 2 11 3 2 12 3 4
QUESTION 5 Public relation companies conducted two surveys about deodorants. The first survey asked a random sample of 500 men about their use of a natural deodorant. A second survey asked the same questions to a random sample of 550 women. In these two studies, 68% of men and 44% of women stated they were dissatisfied with the effectiveness of natural deodorants. Use these results to answer the following questions about the proportion of men and women's satisfaction with natural deoderants. (Round to the nearest whole person as needed). What is the difference between the proportion of men and women? (write as a decimal) The standard error for these two samples is (round to the nearest hundredth) Using a 99% confidence level, the lower limit is and the upper limit is QUESTION 6 Save All Answe Click Save and Submit to save and submit. Click Save All Answers to save all answers. ILOIIOOCI V O UDDU Y D IIINO VIIIS UING DIUvUlU DINU W uvup Hotgut auvut youISUII UNu yu @四田07A CC DIC. étv 12…
Problem 4
Table 9-3 Serum Levels of Total Cholesterol Reported in 71 Participants* Cholesterol Value (mg/dL) No. Observations Cholesterol Value (mg/dL) No. Observations Cholesterol Value (mg/dL) No. Observations 124 1 128 1 132 1 133 136 1 138 139 146 147 149 151 1 153 2 158 3 160 1 161 1 191 162 1 192 163 2 194 គឺ ៖ ៖ ៖ ធី “ È ឥ ន ន E គឺ ៖ ៖ គគឺ 164 3 196 165 1 197 2 2 166 206 1 169 208 171 4 209 175 1 213 177 2 217 178 2 220 179 1 221 180 4 222 181 1 226 184 2 227 186 1 228 1 241 3 264 2 - 2
QUESTION 4 Public relation companies conducted two surveys about deodorants. The first survey asked a random sample of 500 men about their use of a natural deodorant. A second survey asked the same questions to a random sample of 550 women. In these two studies, 68% of men and 44% of women stated they were dissatisfied with the effectiveness of natural deodorants. Use these results to answer the following questions about the proportion of men and women's satisfaction with natural deodorants. (Round to the nearest whole person as needed). For the men, the number of successes within the sample is For the men, the number of failures within the sample is For the women, the number of successes within the sample is for the women, the number of failures within the sample is
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 cancer. She obtains a sample of n = 20 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 (BDI), 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 = 24.4 with a standard deviation of s = 6.02. In the general population of cancer patients, the standardized test is known to have a population mean of 27.2. 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…
QUESTION 5 An experiment was conducted to evaluate the effectiveness of a treatment for tapeworm in the stomachs of sheep. A random sample of 60 worm-infected lambs of approximately the same age and health was randomly divided into two groups. Thirty of the lambs were injected with the drug and the remaining thirty were left untreated. After a 6-month period, the lambs were slaughtered and the number of worms in the lamb of the stomach were counted. The drug-treated sheep had a mean of 24.67 worms with a standard deviation of 13.78. The untreated sheep had a mean of 37.82 worms with a standard deviation of 18.21. Assuming the true variances cannot be assumed equivalent, which of the following would be the correct way to calculate a t test for a two-tailed hypothesis test? OA. 24.67-37.82 O B. о с. t ¹0= 13.78 18.21 30 30 24.67-37.82 + (13.78) 2 30 + 24.67-37.82 + (18.21) ² 30 13.78 18.21 60 60 + 24.67-37.82 (13.78) 2 60 (18.21) 2 60
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2. A cohort study is conducted to assess the association between clinical characteristics and the risk of stroke. The study involves n = 1370 participants who are free of stroke at the study start. Each participant is assessed at study start (baseline) and every year thereafter for 5 years. The following data were collected relating hypertensive status measured at baseline to incident stroke over 5 years. Free of Stroke at 5 years Stroke Baseline: Not hypertensive 1000 50 Baseline: Hypertensive 300 50 Compute the cumulative incidence of stroke in patients classified as hypertensive at baseline.A)0.20B)0.50C)0.0625D)0.05
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5. (10) A recent Gallup Organization Poll asked male and female Americans whether they were pro or pro choice when it comes to abortion issues. The results of the survey are as follows: life Opinion Pro-Life Pro-Choice Gender Men 195 200 Women 240 250 Test whether an individual's opinion regarding abortion is independent of gender at the a = 0.025 level of significance.

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