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.
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get 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. from EN Bilgi.
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 th
Answer to: In the largest clinical trial ever conducted, 401,974 children were randomly assigned to two groups. The treatment group consisted of...
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In the largest clinical trial ever conducted, 401,974 children were randomly assigned to two...
In the largest clinical trial ever conducted, 401,974 children were randomly assigned to two... Question:
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?
a. The requirements are satisfied; the samples are simple random samples that are independent, and for each of the two groups, the sample size is at least 1000.
b. The requirements are not satisfied; the difference between the rates of those that developed polio in the two groups is not statistically significant.
c. The requirements are not satisfied; the samples are not simple random samples that are independent.
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.
Hypothesis test for proportion
Proportions give the items that have a particular trait which is desirable for the study with respect to total elements collected for analysis. The assumptions about such measures in a study are tested using a hypothesis test explicitly designed for proportions, either for one sample, two samples or more than two samples.
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Given InformationTotal number of children surveyed is 401,974.
Number of children in treatment group is 201,229.
Number of children in placebo group...
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Formulating the Research Hypothesis and Null Hypothesis
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Generally, research projects are designed to test a hypothesis, which is a statement of the condition to be studied or the question to be answered. Research projects actually prove or disprove a null hypothesis, which states the opposite of the hypothesis. Learn how to formulate the research hypothesis and null hypothesis, including research questions and if/then statements, and understand the concept of invalid hypothesis.
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Question: 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
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Transcribed image text: 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. A. The requirements are satisfied; the samples are simple random samples that are independent, and for each of the two groups, the sample size is at least 1000. B. The requirements are not satisfied; the samples are not simple random samples that are independent. C. The requirements are not satisfied; the difference between the rates of those that developed polio in the two groups is not statistically significant. 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.
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n 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.
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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.
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Two samples are ____________ if the sample values from one population are not related to or somehow naturally paired or matched with the sample values from the other population.
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Two samples are independent
if the sample values from one population are not related to or somehow naturally paired or matched with the sample values from the other population.
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Terms in this set (12)
n 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.
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.
Two samples are ____________ if the sample values from one population are not related to or somehow naturally paired or matched with the sample values from the other population.
Two samples are independent
if the sample values from one population are not related to or somehow naturally paired or matched with the sample values from the other population.
Two samples are ________________ if the sample values are paired.
Two samples are dependent
if the sample values are paired.
Which of the following is NOT a requirement of testing a claim about two population means when sigmaσ1 and sigmaσ2 are unknown and not assumed to be equal?
The two samples are dependent.
Upper A data set includes the list price and selling price for each of 130 randomly selectedA data set includes the list price and selling price for each of 130 randomly selected homes.homes.
The samples are dependent because there isis a natural pairing between the two samples.
Which of the following statements are true concerning the mean of the differences between two dependent samples (matched pairs)?
If one wants to use a confidence interval to test the claim that mu Subscript d Baseline greater than 0μd>0 with a 0.100.10 significance level, the confidence interval should have a confidence level of 80%.
If one has tenten matched pairs of sample data, there is a loose requirement that the tenten differences appear to be from a normally distributed population.
Which of the following is NOT a requirement of testing a claim about a population proportion using a formal method of hypothesis testing?
The lowercase symbol, p, represents the probability of getting a test statistic at least as extreme as the one representing sample data and is needed to test the claim.
Which of the following is NOT true when testing a claim about a proportion?
A conclusion based on a confidence interval estimate will be the same as a conclusion based on a hypothesis test.
Which of the following is NOT true of using the binomial probability distribution to test claims about a proportion?
One requirement of this method is that npgreater than>5 and nqgreater than>5.
In statistics, what does df denote? If a simple random sample of 2020 speeds of cars on California Highway 405 is to be used to test the claim that the sample values are from a population with a mean greater than the posted speed limit of 65 mi/h, what is the specific value of df?
df denotes the number of degrees of freedom. For this sample, dfequals=1919.
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