For the binomial test, what is the proportion of individuals in the sample who are classified in category A? OV npa O√ pq/n Opq/n X/n
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- The results for a blood test for a certain disease are shown in the table below. Based on the table, what is the prevalence of the disease? T+ T- Total D+ 290 10 300 D- 3219 481 3700 Total 3509 491 4000 A. 0.09 0.97 O B. 0.0725 290 ScreenshotFor each p value stated below (1) what is the decision for each if α=.05 and (2) what is the decision for each if α=.01? (a) p=.1000 (b)p=.0050q29-
- The median of a distribution is the x-value such that exactly half of the area under the distribution lies to the left of z and half to the right. What is the median of the BET A(1, 2) distribution? Round your answer to three decimal places, 167In binomial distribution n=6 and p=0.9, then the value of $P(X=7) is Select one: O a. less than 0 O b. more than 0 O c. 0 O d. 1F 8 15 2 A decade-old study found that the proportion, p, of high school seniors who believed that "getting rich" was an important personal goal was 80%. A researcher decides to test whether or not that percentage still stands. He finds that, among the 210 high school seniors in his random sample, 183 believe that "getting rich" is an important goal. Can he conclude, at the 0.10 level of significance, that the proportion has indeed changed? Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis Ho and the alternative hypothesis H₁. NO Ho H₁ :O (b) Determine the type of test statistic to use. (Choose one) ▼ (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the p-value. (Round to three or more decimal places.) (e) Can we conclude that the proportion of high school seniors who believe that "getting…
- Suppose P(A) = .5 and P(B) = .3 and A andB are independent. What is P(A and B)? %D %3DQuit smoking: A recent study reported that in a sample of 234 European-American HIV-positive smokers, 105 of them had used a nicotine patch to try to quit smoking, and in a sample of 81 Hispanic-American HIV-positive smokers, 25 had used a nicotine patch. Can you conclude that the proportion of patch users is greater among European-Americans? Let p₁ denote the proportion of European-Americans who used the patch. Use the a=0.01 level of significance. Part 1 of 4 (a) State the appropriate null and alternate hypotheses. Ho: P₁ (Choose one) ▼ P₂ H₁: P₁ (Choose one) P2 This is a (Choose one) test. Part 2 of 4 (b) Find the P-value. Round the answer to four decimal places. P-value= X S ŚThe 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 0
- For a binomial distribution with p = 0.20 and n = 25, what is the z-score for X = 12? Select one: a. 1.00 b. -2.5 c. 3.5 d. 5The accompanying table shows the results from a test for a certain disease. Find the probability of selecting a subject with a negative test result, given that the subject has the disease. What would be an unfavorable consequence of this error? The individual actually had the disease Yes No Positive 326 8 Negative 19 1114 The probability is nothing. (Round to three decimal places as needed.) What would be an unfavorable consequence of this error?The probability of getting a Z score greater than 4.0 is ________. 1. almost zero 2. a negative number 3. close to 1.0 4. 0.50
