According to the National Highway and Traffic  Safety Administration,  the proportion of fatal traffic accidents in the United States in which the driver had a positive blood alcohol concentration (BAC) is .36. Suppose a random sample of 105 traffic fatalities in the state of Hawaii results in 51 that involved a positive BAC. D) Check whether the conditions for hypothesis testing using the P-value approach are meet.

Q: A statistics student believes that black cars are less likely to receive tickets for moving…

A: It is given that the P-value is 0.24.

Q: The mean score on a widely freshman history examination is 75. A history teacher at a very large…

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

Q: According to the Center for Disease Control website, in 2011 more than 18% of high school students…

A: It is given that 150 students surveyed, 82 have smoked.

Q: re are from medicines manufactured in the United States. Assume that a simple random sample has been…

A: Population mean μ =14 Sample size n =10

Q: A simple random sample of size n 200 drivers with a valid driver's license is asked if they drive an…

A: Solution: Given information:  n= 200 Sample size of drivers  x = 122 drivers drive an American made…

Q: We would like to compare the proportions of Notre Dame Seniors who choose to live off-campus by…

A: The claim of the test is to test whether the proportion of seniors living off-campus is…

Q: A study was conducted of 531 persons injured in bicycle crashes. The subjects were asked if they…

A: Claim ; there was a relationship between helmet wearing and the occurrence of facial injuries.

Q: The null hypothesis for ANOVA states that a. the variables are independent b. the variables are…

A: ANOVA: In one factor ANOVA model only one factor is studied, that is only the effect on one factor…

Q: The 95​% confidence interval is  -----------<p1−p2<-------- here. ​(Round to three decimal places…

A: Given : x1= 43.0 n1= 49 x2= 76.0 n2= 93 significance level, 0.05

Q: Using 0.05 level of significance, test the hypothesis that proportions of coutnries with number of…

A:

Q: According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft,…

A: a. In this case, it is needed to test whether the data provide enough evidence to show that State A…

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 &gt; p2. Test…

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: From the provided information, Sample size (n) = 54 Out of which 35 involved an intoxicated driver.…

Q: 3) An oceanographer believes the median wave height off of South Florida's coast is equal to 1.9…

A:

Q: the food marketing insititute reports that 28% of households spend less than $100 per week on…

A: the probability that less than 102 households spend less than $100 per week on groceries is…

Q: The table below summarizes data from a survey of a sample of women. Using a 0.01 significance​…

A: The objective is to test the claim that the proportions of​ agree/disagree responses are the same…

Q: In a 2013 poll, it was found that 0.78 of Americans cover their mouth when sneezing. A sociologist…

A: The question is about hypothesis testing.Given :Population proportion of people from country "A"…

Q: A  simple random sample of size n = 200 drivers with a valid driver's license is asked if they drive…

A: The answer to the question :  "Do you drive an American-made automobile?" is either  "Yes" or "No"…

Q: Many elementary school students in a school district currently have ear infections. A random sample…

A: Given X1=11 X2=12 n1=40 n2=30

Q: You have measured the blood hemoglobin concentrations in a random sample of 12 males aged 20-29…

A: Let, X: The blood hemoglobin concentrations in a  males aged 20-29 years measured in mg/dL. X= […

Q: construct a 95% C.I. for the actual; percentage of shoppers who live more than 15 miles from that…

A: The sample size is n = 200 Proportion of shoppers who live more than 15 miles from that center in…

Q: In a random sample of soldiers who fought in the Battle of Preston, 774 soldiers were from the New…

A: The hypotheses are given below: Null hypothesis: H0:p=0.25 Alternative hypothesis: H1:p&gt;0.25 The…

Q: Vitamin E and the Risk of Prostate Cancer: Klien et al (2011) conducted the following study to…

A: In statistics, a unit means an individual whose characteristics are studied. The collection of all…

Q: 1) A dietitian wishes to see if a person's cholesterol level will change if the diet is supplemented…

A: The given data is as follows: Subject BeforeAfter1210190220517032082104192188517817362442287211198

Q: A simple random sample of size n= 200 drivers with a valid driver's license is asked if they drive…

A:

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

A:

Q: est the hypothesis that the proportion of airplane accidents due to pilot error is not 0.51. Use a…

A: a. The following null and alternative hypotheses for the population proportion needs to be tested:…

Q: The bad debt ratio for a financial institution is defined to be the dollar value of loans defaulted…

A: The data of mean bad debt ratio of 65 banks are given and objective is to test whether the mean bad…

Q: If the original claim is "The majority of student population are full time students.", then this is…

A: Proportion: The percentage of a population that falls into a certain category has been referred to…

Q: Listed below are the lead concentrations (in ug /g) measured in different Ayurveda medicines.…

A:

Q: A random sample of Americans were categorized according to their happiness and their income level.…

A: H0: Income and Happiness are independent HA: Income and Happiness are dependent

Q: The sales manager of a food company wants to determine if the weekly sales of 16 ounce packages of…

A: Population mean μ = 2400Sample size n = 400Sample mean x¯ = 2430Sample standard deviation s =…

Q: Rhinoviruses typically cause common colds. In a test of the effectiveness of​ echinacea, 41of the 47…

A: From the given information, let Xl be the number of subjects effective while they are treated with…

Q: A poll in one country indicated that 48​% favor imposing the death penalty​ (the country currently…

A: Sample Size:The formula for the sample size is as follows:

Q: USA Today (Feb. 17, 2011) described a survey of 1,008 American adults. One question on the survey…

A: a) The sample proportion is p-cap = 205/1008           = 0.203 b) The population proportion p is…

Q: Calculate the P-value for a sample of 40 observations with a sample proportion of 0.6 if the null…

A:

Q: According to the Center of Disease Control and Prevention (CDC), 18% of adults in the U.S. over 19…

A: The p-value is 0.0073.

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: Based on their records, a hospital claims that the proportion, p, of full-term babies born in the…

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

Q: A sample is selected from a normal population, and resulting data are as follows: 45.2, 51.5, 49.4,…

A: a. Null hypothesis: H0: µ = 50. Alternative hypothesis: H1: µ &gt;50.

Q: An automotive company is conducting a survey concerning consumer buying preferences of a particular…

A: Statistical hypothesis means writing a statement about the population parameter. In writing…

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.