A survey claims that 9 out of 10 doctors (e, 90%) recommend brand Z for their patients who have children. To test this claim against the aternative that the actual proportion of doctors who recommend brand Z is less than 90%.a random sample of doctors was taken. Suppose the test statistic is 1.75 Can we conclude that H o should be rejected at the a)a 0.10, bya005, and ca-001 level? O a) yes b) yeso no a) no, b) no ) no a) yes; b) yes; ) yes O al no, b) no yes

Q: n₁ = 14, n₂ = 12, x₁ = 21, ₂22, s, 2.5, s₂ -2.8 OA Reject Ho if the standardized test statistic is…

A: We have given that  Sample mean (x̅1) = 21Sample mean (x̅2) = 22Sample size (n1) = 14Sample size…

Q: Determine if this test is left-tailed, right-tailed, or two-tailed. Oleft-tailed Oright-tailed…

A: given data : 436,425,418,428,436,429,420,417,424,417,426,437,433,424,428,436,422,438,436,427

Q: If I tested the glucose level of 200 patients, and had the following results:o with disease who…

A:

Q: Suppose a study reported that the average person watched 1.87 hours of television per day. A random…

A: Consider that μ is the population mean amount of television watched by the average person per day.

Q: A recent study of 89 people showed they ate sandwiches (S) an average of 21.4 times and…

A: Solution-: Given:  μ0=27.4,n=89,x¯=21.4,s=4.3, We take α=0.05

Q: Solve the second one

A: The hypothesis to be tested here is: H0:There is no significant effect of amount of light on how…

Q: Remedial Disorder yes no 23 78 none dysgraphia 25 75 ADHD 20 22 a) Select and compute the…

A: Note: As per our company guidelines, we are supposed to answer only first three sub-parts. Kindly…

Q: Is the mean age at which American children first read now over four years? If the population of all…

A: The claim is that the mean age at which American children first read now over four years. The…

Q: A blood glucose lowering drug given to 4 subjects with Ho: Has 0 and at a = 0.05. The following data…

A:

Q: A professor is interested in prospective students' preference for the class format of a college…

A: Chi square test is the parametric test. It is used to estimate whether there is relationship between…

Q: he manufacturer of a new eye cream claims that the cream reduces the appearance of fine lines and…

A: Given : Sr. No. Before(x) After (y) 1 12 10 2 14 13 3 13 13 4 11 10 5 9 8 6 15 12 7…

Q: A new medication is being developed to treat severe morning sickness in pregnant women. The…

A:

Q: A random sample of 25 students were asked to self-identify as "statistics-lovers" or…

A: Here  degree of freedom df=n1+n2-2  n1=16   n2=9   so  Df=16+9-2     =25-2      =23

Q: The sample is actually 55.  what is the critical value?

A: It is given that the sample is 55 and there are three treatments.

Q: 5.4 An additional 2000 runners entered the race but did not complete it. Of these runners, a mail…

A: 1. Population 1 Runners participated in Marathon = 10000 Among these participants, 500 were chosen…

Q: 14.35 Sodium intake. The Institute of Medicine sets the tolerable upper level of sodium intake for…

A: It is given that the Institute of Medicine sets the tolerable upper level of sodium intake for…

Q: In a random sample of males, it was found that 223 write with their right hands and 21 do not. In a…

A: Given: The data on  right-handedness among males and among females. Let X be the number of males who…

Q: A sample of n=9 athletes is taken from the SW population that has a M =29. Stress scores are…

A: State the hypotheses. That is, there is no sufficient evidence to conclude that the treatment…

Q: A recent poll revealed the political affiliations of 237 Americans, along with the region of the…

A: The χ2 test is a non-parametric test.

Q: A random sample of 25 students were asked to self-identify as "statistics-löVers" 8F…

A: Test statistic formula: t=M1-M2n1-1s12+n2-1s22n1+n2-11n1+1n2 Now substitute the given values in the…

Q: 7.13 In a group of people ranging from 65 to 69 years of age, the hypertension status, by sex, was…

A: The objective of the question is to determine if there is a significant difference in hypertension…

Q: Suppose for a sign test, there are 8 plus signs, 3 negative signs and 1 zero. A. What would be the…

A:

Q: 4, s = 0.3, n = 15 ‚š = 152, s = 5.5, n = 50 9, x = 30.2, s = 3.8, n = 4 S = 52. n = 70 %3D

A:

Q: How many subjects participated in an independent-samples t-test if a researcher reports, t (20) =…

A: Given information- We have given an independent-samples t-test. The value of test statistics is- t…

Q: (c) Find the value of the test statistic. (Round to three or more decimal places.) 2.724 (d) Find…

A: It is given that the two-tailed test. The test statistic is z = 2.724.

Q: A random sample of 25 students were asked to self-identify as "statistics-lovers" or…

A:

Q: Suppose you are to test the hypothesis: Ho: P = 0.85 against Ha: P # 0.85. Using a random sample of…

A: interest. Use a 0.05 level of significance to test this hypothesis Given, x=218 n=250 Hypothesis;…

Q: A new medication is being developed to treat severe morning sickness in pregnant women. The…

A:

Q: Below indicate whether the appropriate test would be an independent t-test, dependent t-test,…

A:

Q: 19.30 (EX) Color blindness: Color blindness, or dyschromatopsia, is a form of genetic deficiency in…

A: The confidence level is 95% Therefore, α = 0.05 and α/2=0.025. The margin of error is 0.02. Since…

Q: A random sample of 10 independent healthy people showed the body temperatures given below (in…

A: Given data is 98.3,98.5,99.0,96.2,98.4,98.9,97.8,99.3,98.7,97.4sample size(n)=10

Q: 6. An experiment measured the level of CPK in the blood of ten runners and ten cyclists, both before…

A: a) Given: The CPK values of runners before exercise Sample size n1=10 Sample Mean x¯=255.63 Sample…

Q: The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day.…

A: The mean significance between the sample and population tested using hypothesis testing. If the…

Q: the production line and were tested. Below are the measured resistance of the d resistors. [220.8,…

A: We have given that data  220.8, 221.9, 223.2, 219.1, 222.8, 219.2, 219.4, 219.5 First I want to find…

Q: A large airline company called Tale Winds monitors customer satisfaction by asking customers to rate…

A:

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.