Of 85 randomly selected women, 38 have tried some form of alternative medicine. Of 90 randomly selected men, 23 have tried some form of alternative medicine. At the 10% significance level, do the data provide sufficient evidence to conclude that women are more likely than men to try alternative forms of medicine?

Q: Random samples of 50 women and 50 men are taken at Norwich University. They are asked their reaction…

A: Sample sizes n1=50 ,n2=50Favorable cases x1=23 ,n2=19

Q: A random sample of 860 births in New york state included 434 girls. Use a 0.05 significance level to…

A: The aim is to test the claim that 48.8% of newborn babies are girls. The test hypotheses are given…

Q: Researchers reported a study in which 396 domestic violence defendants were randomly assigned to…

A: The number of people arrested within 12 months in the counselling group is 48 out of 224.

Q: Suppose 214 subjects are treated with a drug that is used to treat pain and 53 of them developed…

A:

Q: a study was conducted to determine the proportion of people who dream in black and white instead of…

A: The objective of this question is to test the claim that the proportion of people over 55 who dream…

Q: The percentage of physicians who are women is 32.4%.  In a survey of physicians employed by a large…

A: This problem can be solved by using test of significance for single proportion. In usual notations,…

Q: A labor statistician claims that 6% of the labor forces will be laid off likely  to pandemic impact.…

A: Solution: Let X be the number of employees will be likely to be laid off and n be the sample number…

Q: A health organization asserts that the prevalence of smoking among male adults 18 years or older in…

A: The test hypotheses are: Null hypothesis: H0: p1 = p2 Alternative hypothesis: Ha: p1 > p2. Test…

Q: Inadequate exposure to outdoor lighting conditions may increase the risk of myopia in children. A…

A:

Q: A random sample of 834 births included 433 boys. Use a 0.05 significance level to test the claim…

A:

Q: 10 years ago, a Gallop Poll reported that 79% of people reported that they enjoy driving their car.…

A: Given: Population proportionp=0.79Number of trials(n)=1048Number of successes (x)=734

Q: A random sample of 855 births included 434 boys. Use a 0.01 significance level to test the claim…

A: Given Data: p^=xn=434855 n=855   Null and Alternate Hypothesis: H0: p=0.505 H1: p≠0.505

Q: b. The test statistic [z |(please show your answer to 3 decimal places.) c. The p-value (Please show…

A: Given : x1 = 432x2 = 460n1 = 676n2 = 773 Level of significance = α = 0.05

Q: suppose 223 subjects are treated with a drug that is used to treat pain and 52 of them developed…

A: Null Hypothesis: A hypothesis which is tested for plausible rejection is called the Null Hypothesis…

Q: Suppose 221 subjects are treated with a drug that is used to treat pain and 52 of them developed…

A:

Q: What is the observed value of the test statistic for the appropriate hypothesis test? Give answer to…

A: Let p1 and p2 be the two population proportions of homes with asbestos in Kingston and the…

Q: In a randomly selected group of people who bought compact cars, 204 were women and 264 were men.…

A: No.of women who bought compact cars=204No.of men who bought compact cars=264significance…

Q: a study was conducted to determine the proportion of people who dream in black and white instead of…

A: The objective of this question is to conduct a hypothesis test to determine if the proportion of…

Q: Do the results support the belief that 51.5​% of newborn babies are​ boys?

A: Given : number of success , x= 430.0 sample size, n = 845 population proportion,p=…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Dear student as per guidelines we answer the first three subparts only. Please post other subparts…

Q: A survey of 1200 TV households showed that 53.5% of them had at least one stand-alone streaming…

A: Let p be the population proportion  p=majority=1/2=0.50=50%, n=1200, p^=sample…

Q: A basketball player claims that the success of his shots is more than 70%. If this player scored 152…

A:

Q: In a study of smokers who tried to quit smoking with nicotine patch therapy, 39 were smoking after…

A: Given Information: The number of smokers who tried to quit smoking with nicotine patch therapy,…

Q: A doctor is concerned that nausea may be a side effect of Tamiflu, but is not certain because nausea…

A: From the given information, Consider, X be the random variable that shows number of persons were…

Q: In a random sample of 315 people 90 of them were smokers. Based on the above sample test whether the…

A:

Q: Suppose 236 subjects are treated with a drug that is used to treat pain and 53 of them developed…

A:

Q: A psychologist believes that the frequency that a person engages in sexual activity without a…

A: Chi square test is used to determine the independence of variables in the data set. There are four…

Q: Random samples of 110 homes in Kingston, Ontario (₁) and 100 homes in Owen Sound, Ontario (1₂) were…

A: sample size of homes in kingston(n1)=110sample size of homes in Owen sound(n2)=100presence of…

Q: Suppose 214 subjects are treated with a drug that is used to treat pain and 54 of them developed…

A: Given that, x=54,n=214 The sample proportion is, Null and alternative hypothesis:

Q: A marketing survey involves product recognition in New York and California. Of 200 New Yorkers…

A: Given, A survey involves product recognition 50 knew the product out of 200  n1=200, x1=55 77 knew…

Q: According to a survey by the Consumer Reports National Research Center of 1003 adults, 542 adults…

A: To test the claim that more than 50% of the adults are annoyed by food that does not look or taste…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Denote p1, p2 as the proportions of all people who dream in black and white instead of color under…

Q: Suppose 243 subjects are treated with a drug that is used to treat pain and 50 of them developed…

A: Given, The number of subjects treated with a drug that is used to treat pain is n=243 The number of…

Q: It is believed that 11% of all Americans are left-handed. A college needs to know how many…

A: Given that  Sample size n =200 Favorable cases x =30 Sample proportion p^=x/n  =30/200 =0.15

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.