A research group wants to determine whether the proportion of car accidents caused by drivers using...

Question

Question

A research group wants to determine whether the proportion of car accidents caused by drivers using cell phones has changed f

math Statistics-And-Probability

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

Standard error of proportions, SE = $\sqrt{p(1-p)/n} = \sqrt{0.13 * (1-0.13)/10000}$

= 0.003363034

Test statistic, z = ( $\hat{p}$ - p) / SE

= (0.17 - 0.13) / 0.003363034

= 11.894

Add a comment

Answer 2

Similar Homework Help Questions

A research group wants to determine whether the proportion of car accidents caused by drivers using...

A research group wants to determine whether the proportion of car accidents caused by drivers using cell phones has changed from the previous value of 13%. They obtained 10,000 auto accident reports and found that 17% were caused by drivers using cell phones. Computer the value of the test statistic. Question 1 options: 11.894 4.044 23.788 16.533
A research group wants to determine whether the proportion of car accidents caused by drivers using...

A research group wants to determine whether the proportion of car accidents caused by drivers using cell phones has changed from the previous value of 13%. They obtained 10,000 auto accident reports and found that 17% were caused by drivers using cell phones. Computer the value of the test statistic. options: A. 16.533 B. 23.788 C. 4.044 D. 11.894
PROBLEM 3. Researchers wanted to determine whether drivers are significantly distracted while driving when using a...

PROBLEM 3. Researchers wanted to determine whether drivers are significantly distracted while driving when using a cell phone or talking to a passenger in the car. In a study involving 60 drivers, 20 drivers were randomly assigned to drive while using a cell phone, 20 drivers were assigned to drive while talking to a passenger, and the remaining drivers drove alone in the car. Part of the study involved asking drivers to exit the freeway at a particular exit. In...

] A marketing research firm wants to investigate the relationship between chip consumption and whether a...

] A marketing research firm wants to investigate the relationship between chip consumption and whether a person likes to watch professional football on television. One hundred randomly selected people are asked whether they eat chips and whether they watch football on television. The following results are obtained: Watches football Does not watch football Totals Eats chips 20 45 65 Does not eat chips 5 30 35 Totals 25 75 100 1) State the null and alternative hypotheses [1 mark]: ________________________________________________________________________________________...
c.detirmine the test statistic A physical therapist wants to determine the difference in the proportion of...

c.detirmine the test statistic A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained physical activity. What sample size should be obtained if she wishes the estimate to be within four percentage points with 95% confidence, assuming that (a) she uses the estimates of 22.6% male and 18.9% female from a previous year? (b) she does not use any prior estimates? Assume that both populations are normally distributed (a) Test...
thanks for your help The National Highway Traffic Safety Administration reported the percentage of traffic accidents...

thanks for your help The National Highway Traffic Safety Administration reported the percentage of traffic accidents occurring each day of the week. Assume that a sample of 420 accidents provided the following data Sunday Monday Tuesday Wednesday Thursday Friday Saturday 65 52 54 45 52 72 80 a. Conduct a hypothesis test to determine if the proportion of traffic accidents is the same for each day of the week. What is the p value? Compute the value of the test...

6. The sampling distribution of the sample proportion In 2007, about 30% of new-car purchases in ...

Please Help me to full the all blank (11 blanks in total) 6. The sampling distribution of the sample proportion In 2007, about 30% of new-car purchases in California were financed with a home equity loan. [Source: "Auto Industry Feels the Pain of Tight Credit," The New York Times, May 27, 2008.] The ongoing process of new-car purchases in California can be viewed as an infinite population Define p as the proportion of the population of new-car purchases in California...
Students conducted an experiment to determine whether the Belgium-minted Euro coin was equally likely to land...

Students conducted an experiment to determine whether the Belgium-minted Euro coin was equally likely to land heads up or tails up. Coins were spun on a smooth surface, and in 330 spins, 180 landed with the heads side up (a) Should the students interpret this result as convincing evidence that the proportion of the time the coin would land heads up is not 0.5? Test the relevant hypotheses using α decimal places.) 0.01. (Round your test statistic to two decimal...
1. Determine the area under the standard normal curve that lies to the right of z...

1. Determine the area under the standard normal curve that lies to the right of z = -.22 z = .29 c = 1.05 and d = -.97 2. A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If an applicant is randomly selected, find the probability of a rating that is between 200 and 275. Round your answer to four decimal places. 3. The...

Psy 248: STATISTICS- MARIA MIRANDA Computer Lab Assignment II, SP 2019 Comparing means using t-te...

Psy 248: STATISTICS- MARIA MIRANDA Computer Lab Assignment II, SP 2019 Comparing means using t-tests This assignment will give you practice choosing the appropriate test statistic to use for different research designs that all involve comparing using t-tests. You will need to enter the data, use SPSS to test hypothesis, and write a conclusion for each problem stating weather or not the samples differed significantly. To run all 3 tests, use: ANALYZE, COMPARE MEANS, and then select the type of...

A research group wants to determine whether the proportion of car accidents caused by drivers using...

Homework Answers