A driver's education course compared 1,500 students who had not taken the course with 1,850 students who had. Of those students who did not take the driver's education course, 1,150 passed the written driver's exam the first time compared with 1,440 of the students who did take the course. A significance test was conducted to determine whether there is evidence that the students who took the driver's education course were more likely to pass the written driver's exam the first time. What is the p-value for an appropriate hypothesis test?

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

A:

Q: A drug company is interested in investigating whether the color of their packaging has any impact on…

A: State the hypotheses. Null hypothesis: Alternative hypothesis:

Q: A hospital found out that there is a higher incidence of food poisoning in adults than in children.…

A: Given that, A hospital found out that there is a higher incidence of food poisoning in adults than…

Q: In a clinical study of an allergy drug 98 of the 202 subjects reported experiencing significant…

A:

Q: In a random sample of Formula 1 drivers, 161 were European and 39 were not. Use a 0.05 significance…

A: Given: n = 161 x = number of drivers who are not Europeans  x = 39 Sample proportion P = 39/161 =…

Q: If a 0.10 significance level is to be used to test the claim that  p1< p2​, what confidence level…

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Q: 4. In a study at a hospital, 60 out of 120 smokers and 80 out of 200 nonsmokers were found to have…

A: Formula : Test statistic

Q: In a recent poll, 1095 randomly selected adults were asked whether they approve of labor unions; 65%…

A: The null and alternate hypothesis are H0 : p=0.69Ha : p&lt;0.69 The test statistics is…

Q: In a nationally representative sample of 1,668 adult Americans, 510 indicated that they had checked…

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Q: If the percent of all blonde college students who have a boyfriend is the same as the percent of all…

A: 1. The correct choice is: (b) If the percent of all blonde college students who have a boyfriend is…

Q: A researcher was interested in whether there were differences in the level of activity in children…

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Q: A survey of 1010 college seniors working towards an undergraduate degree was conducted. Each student…

A: The provided information are:

Q: In a co-educational institution, out of 200 students 150 were boys. They took an examination and it…

A: Given  Total student=200, 150=boys, 120=passed and girls failed=10

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

A:

Q: A telecommunications company provided its cable TV subscribers with free access to a new channel for…

A: We have to perform Z test for single proportion.

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A: Given : Claim : The proportions have changed.

Q: In a survey of 100 college students at Chabot College, 67 said that they commuted by cars. In…

A: a) The test hypotheses are: Null hypothesis: H0: p1 = p2 Alternative hypothesis: Ha: p1 ≠ p2 Test…

Q: In a winter of an epidemic flu, the parents of 2000 babies were surveyed by researchers at a…

A: We have to perform test for difference in proportions.

Q: In a study of 787 randomly selected medical malpractice lawsuits, it was found that 520 of them were…

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Q: company to determine if the company’s new medicine was effective after two days.

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A:

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

A:

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

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

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Q: A high school counselor is interested in determining factors that contribute to high school drop out…

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Q: In a survey of 1,626,773 U.S. adults, 49,311 personally identified as lesbian, gay, bisexual, or…

A:

Q: Buckling Up. The National Highway Traffic Safety Administration collects data on seat-belt use and…

A: Introduction: Denote p1, p2 as the true population proportions of drivers who use seat-belts while…

Q: In a co-educational institution, out of 200 boys. They took an examination and it was found that 120…

A:

Q: Step 1 of 3 :   State the null and alternative hypotheses for the test. Fill in the blank below.…

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Q: Do the needs of patients in the emergency room differ for those who come by car vs. those by…

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Q: A superintendent of a school district in St. Louis wants to compare their student preference of…

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

A:

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

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Q: The poll referenced in the previous exercise ("military draft study," zap-Ipso,June 2005) also…

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Q: According to a book published in 2011, 45% of the undergraduate students in the United States show…

A:

Q: A drug company is interested in investigating whether the color of their packaging has any impact on…

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Q: Does stretching before exercise reduce the chance of injury? To answer this question, a random…

A:

Q: A national publishing house claims that 37% of all weekly magazine readers in South Africa read…

A: Given : Claim : 37% of all weekly magazine readers in South Africa read their publication.

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Q: 4. In a poll of 1018 adults, it was found that 22% smoked cigarettes in the past week. Use a 0.05…

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.