13.12. Given large random samples from two binomial populations, show that the null hypothesis 01 = 02 can be tested on the basis of the statistic X2 X1 п2 n1 %3| ĝ(1 – Ô) null hypoth n1 П2 X1+x2 where ê = (Hint: Refer to Exercise 8.5 on %3D n +n2 page 239.)
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- In a recent study, 50 males used a new weight-loss supplement, and 39 of them experienced weight loss a 100 females used the same supplement, and 66 of them experienced weight loss after two weeks. Fill in the blanks below to make the most reasonable statement possible. The new weight-loss supplement was more effective on (Choose one) ▼ in the study. That is because only % of them failed to lose weight after two weeks, whereas % of the (Choose one) failed to lose weight after two weeks.The probability of flu symptoms for a person not receiving any treatment is 0.051. In a clinical trial of a common drug used to lower cholesterol, 56 of 1041 people treated experienced flu symptoms. Assuming the drug has no effect on the likelihood of flu symptoms, estimate the probability that at least 56 people experience flu symptoms. What do these results suggest about flu symptoms as an adverse reaction to the drug? (a) P(X 256)= (Round to four decimal places as needed.) n example 6 Get more help. M C Oll 2000 16 & 7 O * 8 Clear all ( 9 Check answer 0In a recent study, 20 males used a new weight-loss supplement, and 14 of them experienced weight loss after two weeks. In the same study, 50 females used the same supplement, and 29 of them experienced weight loss after two weeks. Fill in the blanks below to make the most reasonable statement possible. The new weight-loss supplement was less effective on ▼(Choose one) in the study. That is because % of them failed to lose weight after two weeks, whereas only % of the ▼(Choose one) failed to lose weight after two weeks.
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- A sample of 323 urban adult residents of a particular state revealed 65 who favored increasing the highway speed limit from 55 to 65 mph, whereas a sample of 177 rural residents yielded 75 who favored the increase. Does this data indicate that the sentiment for increasing the speed limit is different for the two groups of residents? (a) Test H0: p1 − p2 = 0 versus Ha: p1 − p2 ≠ 0 using ? = 0.05, where p1 refers to the urban population. (Round your test statistic to two decimal places and your P-value to four decimal places.) z = P-value = State the conclusion in the problem context. Fail to reject H0. The data suggests that the sentiment for increasing the speed limit is different for the two groups of residents.Reject H0. The data suggests that the sentiment for increasing the speed limit is different for the two groups of residents. Fail to reject H0. The data does not suggest that the sentiment for increasing the speed limit is different for the two groups of…Consider the following scenario: • Let P(C) = 0.3• Let P(D) = 0.8• Let P(C|D) = 0.3 A. P(C AND D) = [ Select ] ["0.30", "0.24", "0.26", "0.11"] B. Are C and D Mutually Exclusive? [ Select ] ["No, they are not Mutually Exclusive.", "Yes, they are Mutually Exclusive."] C. Are C and D independent events?[ Select ]["No, they are Dependent.", "Yes, they are Independent."] D. P(C OR D) = [ Select ] ["0.92", "0.86", "0.60", "1.1"] E. P(D|C) = [ Select ]["0.30", "0.95", "0.24", "0.80"]An education researcher claims that at most 7% of working college students are employed as teachers a= 0.01, is there enough evidence to reject the researcher's claim? Complete parts (a) through (e) below. r teaching assistants. In a random sample of 500 working college students, 9% are employed as teachers or teaching assistants. At (a) Identify the claim and state H, and H Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) A. At most 7 % of working college students are employed as teachers or teaching assistants. O B. % of working college students are employed as teachers or teaching assistants. O C. The percentage of working college students who are employed as teachers or teaching assistants is not %. O D. More than % of working college students are employed as teachers or teaching assistants. Let p be the population proportion of successes, where a success is a…
- 67% 3 / 4 4. Find P(A) 12 (c) P(A) 1 () P(A)-7 5 13 (a) P(4) (b) P(A)- 17 17 5. Find P(AC B) () P(A\B)= 12 (a) P(AnB)= 17 (b) P(Ar B) = 17 (6) P(Ar B)= 17 6. Find P(AUB) (3) P{AJB) = (h) P(AB)= (e) P(AUB}= 12 (d) P(AUB)= 7. Find P(AC B) 10 13 17Use the data in the table below, which shows the employment status of individuals in a particular town by age group. Part-time Unemployed Age Full-time 0-17 25 187 252 18-25 391 200 199 26-34 434 66 22 35-49 562 192 149 50+ 461 170 237 If a person is randomly chosen from the town's population, what is the probability that the person is under 18 or employed part-time?5Suppose that in the first half of a certain season, Dustin Pedroia of the Boston Red Sox batted .300 while Mike Napoli batted only .275. And further suppose that in the seocnd half, Pedroia batted .250 while Napoli batted only .240. Someone claims that Napoli had a higher batting average for the entire season than Pedroia. Is that possible, or must the claim be rejected outright?
