In the largest clinical trial ever conducted, 401,974 children were randomly assigned to two groups. The treatment group consisted of 201,229 children given the Salk vaccine for polio, and the other 200,745 children were given a placebo. Among those in the treatment group, 33 developed polio, and among those in the placebo group, 115 developed polio. If we want to use the methods for testing a claim about two population proportions to test the claim that the rate of polio is less for children given the Salk vaccine, are the requirements for a hypothesis test satisfied? Explain. Choose the correct answer below. O A. The requirements are not satisfied; the samples are not simple random samples that are independent. O B. The requirements are not satisfied; the difference between the rates of those that developed polio in the two groups is not statistically significant. OC. The requirements are satisifed; the samples are simple random samples that are independent, and for each of the two groups, the sample size is at least 1000. O D. The requirements are satisfied; the samples are simple random samples that are independent, and for each of the two groups, the number of successes is at least 5 and the number of failures is at least 5.

Q: About 10% of the human population is left-handed. Suppose a researcher speculates that artists are…

A: Step 1:From the provided information,Step 2:a)We are not sure the sample was selected randomly, the…

Q: If a hurricane was headed your way, would you evacuate? The headline of a press release states,…

A: Sample size = n = 4625 Sample proportion = p̂ = 0.32

Q: children were given a placebo, and 93 of those children developed the disease. Consider the vaccine…

A: Solution

Q: Because of the increased cost of housing, a national real estate board wants to compare the…

A:

Q: A press release states that "by an overwhelming margin, Americans want to live in a sunny place."…

A: a) Define that p is the proportion of all adult Americans who would prefer to live in a hot climate…

Q: Report the test statistic. Round your answer to TWO decimal places.  You may use the observed…

A: It is given that  Favourable cases, x = 777 Sample size, n = 2101 Population proportion, p = 34.5% =…

Q: Do sports drinks help prevent cramps in endurance sports? At the end of a marathon, officials will…

A: Observational study: In observational study, the individuals of the study are observed by the…

Q: In the largest clinical trial ever conducted, 401,974 children were randomly assigned to two groups.…

A:

Q: Fifteen inbred laboratory rats (Rattus norvegi-cus) were randomly assigned to three groups of five…

A: given  Fifteen inbred laboratory rats (Rattus norvegi-cus) were randomly assigned to three groups of…

Q: In the largest clinical trial ever conducted, 401,974 children were randomly assigned to two groups.…

A: Solution: Given information: n1=201229  Sample size of treatment x1=33  successesfailures=…

Q: Compute the value of the test statistic. Round your answer to two decimal places.

A:

Q: In a survey of working parents (both parents working), one of the questions asked was "Have you…

A: From the provided information,

Q: Last year, the marist poll conducted a national survey of adults and found that 35% responded "A lot…

A: Null and Alternate Hypothesis: H0: Response to this question by adults nationwide has not changed…

Q: . A study of cell phones and the associated risk of brain cancer looked at a group of 519 people who…

A: # Retrospective study:A study that compares two groups of people those with the disease or condition…

Q: During the electoral campaign, the mayor comes under criticism that City Hall and local public…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: 30 Day Re-admission Location of Residence Yes No      Urban 17,872 3,792      Rural 9,428…

A: Given the table is, Location of Residence Yes No Total Urban 17872 3792 21664 Rural 9428 1906…

Q: In a study, a large sample representative of the households in the US were asked about their smoking…

A: Research: Research is conducted to acquire knowledge and skills or to address the situation about…

Q: In statistical surveys where individuals are randomly chosen and asked​ questions, experience has…

A: From the above given data the following solution is provided below:

Q: 1. During the COVID-19 Pandemic, while school-aged children were attending classes online, 70% of…

A: Sample size n =500 Favorable cases x =335 Sample proportion p^=x/n  =335/500 =0.67

Q: An article claimed that "those with a college degree reported a higher incidence of sunburn than…

A:

Q: As many as 20% of all Americans contract influenza each year. A sample of 400 randomly selected…

A: The pis the proportion of all Americans who contract influenza each year p=0.20 The sample size is…

Q: In a survey of working parents (both parents working), one of the questions asked was "Have you…

A: According to the given information here we will use z test for proportion The null and alternative…

Q: In order to evaluate the effects of stress on the development of stomach ulcers, three separate…

A: It is given in this study three separate groups of monkeys were taken.

Q: Identify whether the studies described here are based on single samples, paired samples, or…

A:

Q: In 1948, an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do…

A: Here we have , X1 = 429, N1 = 1100 , p1 ^= x1n1 = 0.39 X2 = 363 , N2 = 1100 , p2 ^= x2n2 = 0.33

Q: An article published in the “American Journal of Public Health” describes the results of a health…

A: No. of 50 years of age or older male convicts in the administered health survey, The sample…

Q: You may need to use the appropriate appendix table or technology to answer this question Fewer young…

A: In year A, 61.9% of people under 20 years who were eligible had a driver's license.In year B, 49.7%…

Q: Using the same anti-venom study, answer the following questions. A study was done on children (6…

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

Q: In a survey of working parents (both parents working), one of the questions asked was "Have you…

A:

Q: who live within 20 miles of the coast in high hurricane risk counties of eight southern states. In…

A: It is given that sample size (n) is 4,625 and p hat value is 1-0.32 = 0.68.

Q: If we construct a 95% confidence interval estimate for the true proportion of all Minnesota school…

A: here given, n = 200 sample proportion  =20200 = 0.1 here for z-critical use excel command…

Q: Does this indicate that the population proportion of guests who catch pike over 20 pounds is…

A: Given :              P=0.75Total guest in summer (x) =65sample size (n)=84  p^=xnp^=6584p^=0.7738 a)…

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: The information provided in the question are as follows : True proportion (p) = 0.06 Null hypothesis…

Q: An ABC News poll asked adults whether they felt genetically modified food was safe to eat. 35% felt…

A: The objective of this question is to determine whether there is a significant difference between the…

Q: In a study, a large sample representative of the households in the US were asked about their smoking…

A: Solution: It is needed to choose the correct option.

Q: 3. A study in Men's Health magazine stated that 14% of men said they use exercise to reduce stress.…

A:

Q: 1) In a study of the association between exposure to asbestos and risk of mesothelioma, 200 cases…

A: Precision is generally used to how close the measured values related to each other when the study is…

Q: A report describes a survey of 500 licensed drivers. Each driver in the sample was asked if they…

A: sample size (n) = 500Want to test if there is convincing evidence that fewer than 50% of licensed…

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.