Do you prefer paintings in which the people are fully clothed? This question was asked by a professional survey group on behalf of a national arts organization. A random sample of n1 = 56 people who are conservative voters showed that r1 = 42 said yes. Another random sample of n2 = 61 people who are liberal voters showed that r2 = 37said yes. Does this indicate that the population proportion of conservative voters who prefer art with fully clothed people is higher? Use α = 0.05. (a) What is the level of significance?   What is the value of the sample test statistic? (Test the difference p1 − p2. Do not use rounded values. Round your final answer to two decimal places.) (c) Find (or estimate) the P-value. (Round your answer to four decimal places.)

Q: We would like to know if more than 43% of Spokane citizens favor an increase in the sales tax. We…

A: Given, The sample proportion is,

Q: the in a large town (voting population over 100,000). An exit poll of 200 voters finds that 104…

A:

Q: A pizza chain advertises that, in recent taste experiment in which their pizza (pizza A) was…

A: Expected value (E) =Total frequency 5

Q: In a survey, 31% of the respondents stated that they talk to their pets on the telephone. A…

A: Given that n =150 ,p = 0.31

Q: Do you prefer paintings in which the people are fully clothed? This question was asked by a…

A: Given: n1 = 55  r1 = 44  n2 = 63 r2 = 39  Level of significance = 0.05

Q: At Community Hospital, the burn center is experimenting with a new plasma compress treatment. A…

A: The provided information are: Those recieved the plasma compress treatmentx1=306, n1=403Those…

Q: Do you prefer paintings in which the people are fully clothed? This question was asked by a…

A: a) The level of significance is 0.05. b) The test hypotheses are: Null hypothesis: H0: p1 = p2…

Q: At Community Hospital, the burn center is experimenting with a new plasma compress treatment. A…

A:

Q: for him?  Use stattrek.org to calculate your answer .8698 .1302 NONE OF THE OTHERS .2530 .2633

A: Given data number of success , x= 4 sample size, n =40 population proportion,p=…

Q: At Community Hospital, the burn center is experimenting with a new plasma compress treatment. A…

A: The provided information are: Those recieved the plasma compress treatmentx1=266, n1=334Those…

Q: The answer was not correct... i think they were wanting some kind of answer closer to like…

A:

Q: A survey was conducted to assess the preference of people to reopen LA economy after the extended…

A: A survey was conducted to assess the preference of people to reopen LA economy after the extended…

Q: A researcher would like to determine whether there is any relationship between students’ grades and…

A: From the provided information, Sample size (n) = 100 Sample mean (M) = 3.25 Population standard…

Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be:…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: The graduation rate from high school in a certain county is 76%. A school in that county wants to…

A: Given that  Sample size n =300 Favorable cases x =223 Sample proportion p^=x/n  =223/300 =0.7433

Q: On time A Department of Transportation report aboutair travel found that, nationwide, 76% of all…

A:

Q: Consider an experiment for patients who underwent CPR for a heart attack and then was sent to the…

A: Let us consider two samples taken randomly The proportion of the two samples is compared.  Since the…

Q: Please answer number 13.

A: It is given that 43% had no children, 18% are had one child, 18% are have two children, 21% have…

Q: In a recent study, 50 males used a new weight-loss supplement, and all but 13 of them experienced…

A: Given that

Q: A random sample of n₁ = 10 regions in New England gave the following violent crime rates (per…

A: Sample sizes:x1x23.33.53.74.344.73.95.53.33.34.14.81.83.54.82.42.93.13.13.55.22.8

Q: A medical school claims that more than 28% of its students plan to go into general practice. It is…

A:

Q: (SR 7.19) According to a Gallup poll, 63% of concession stand workers like the smell of their…

A: Here use normal approximation because sample size is too large

Q: At Community Hospital, the burn center is experimenting with a new plasma compress treatment. A…

A: Find z-critical value:…

Q: A local school board wants to estimate the difference in the proportion of households with…

A: Given that  Sample sizes n1=40  , n2=45 Favorable cases x1=40 , x2=25

Q: If P( A) = .40, P( B) = .30, and P AOB) = .15, then P( A/ B) is %3D %3D .375 .12 .50 .045

A: Its conditional probability P(b)=0.30 P(a and b)=0.15

Q: A medical school claims that more than 28% of its students plan to go into general practice. It is…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: a) Verify that the 95% CI for the difference in the proportions of female Hispanic drivers in the…

A: The data is given as follows:   Wearing seat belt     City yes no total New York 183 37 220…

Q: The records of a light bulb manufacturer show that, when the manufacturing machinery is working…

A: Given that the records of a light bulb manufacturer show that, when the manufacturing machinery is…

Q: A local school board wants to estimate the difference in the proportion of households with…

A: To construct the confidence interval about difference in two proportions, we must use z –…

Q: an education researcher claims that 60% of college students work yearHound In a random sample of 300…

A:

Q: A humane society claims that less than 64% of households in a certain country own a pet. In a random…

A:

Q: Data from a study of two air lines fly to Small Town   Flights on Time  Flights Late Podunk…

A: Given joint probability table is as follows:

Q: A public opinion poll surveyed a simple random sample of voters. Respondents were classified by…

A: Given The data is as follows:   Republican Democrat Independent Female 261 239 42 Male 202…

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.