For each hypothesis test:State the claim (or research question) mathematically.Determine the null and alternative hypotheses.Identify the sample statistics.Compute the standardized test statistic. Round to two decimal places.Determine the P-value. Round to three decimal places.Make a decision about the hypotheses and interpret the decision regarding the underlying question.USE TI84 if possible 7. A taxi company claims that its drivers have an average experience greater than 12.5 years. Aresearcher decides to investigate this, and finds that in a random sample of 12 taxi drivers, themean driving experience was 13.1 years with a standard deviation of 1.6 years. At a = 0.05,does the sample provide evidence that the mean number of years of experience of all the taxidrivers is actually greater than 12.5 years?

Consider a variable, X: driving experience.Given that,Sample size, Sample sd, Sample mean, To test…

A taxi company claims that its drivers have an average experience greater than 12.5 years. A researcher decides to investigate this, and finds that in a random sample of 12 taxi drivers, the mean driving experience was 13.1 years with a standard deviation of 1.6 years. At a = 0.05, does the sample provide evidence that the mean number of years of experience of all the taxi drivers is actually greater than 12.5 years?

A taxi company claims that its drivers have an average experience greater than 12.5 years. A researcher decides to investigate this, and finds that in a random sample of 12 taxi drivers, the mean driving experience was 13.1 years with a standard deviation of 1.6 years. At a = 0.05, does the sample provide evidence that the mean number of years of experience of all the taxi drivers is actually greater than 12.5 years?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Follow the 5 steps in hypothesis testing to solve the problem. Show necessary solution. 5 STEPS IN HYPOTHESIS TESTING: Step 1: Null and Alternative Hypothesis Step 2: Statistical Test Step 3: Critical Regions Step 4: Computation Step 5: Decision and Conclusion
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For each type of hypothesis test described below, identify the type of test statistic and, if appropriate, the degrees of freedom. A Goodness-of-Fit test, with 8 categories and a sample size of 89.A. Chi-Squared with df = 88.B. Chi-Squared with df = 8.C. Chi-Squared with df = 87.D. Chi-Squared with df = 89.E. Chi-Squared with df = 7.F. Chi-Squared with df = 9. A Goodness-of-Fit test, with 7 categories and a sample size of 13.A. Student-T with df = 12.B. Student-T with df = 6.C. Chi-Squared with df = 6.D. Normal with mean = 13 and standard deviation 7.E. Standard Normal.F. Chi-Squared with df = 12. A test for independent factors, with 4 rows, 6 columns, and a sample size of 129.A. Student-T with df = 3.B. Chi-Squared with df = 24.C. Standard Normal.D. Chi-Squared with df = 23.E. Student-T with df = 128.F. Chi-Squared with df = 15.
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Among a simple random sample of 331 American adults who do not have a four-year college degree and are not currently enrolled in school, 159 said they decided not to go to college because they could not afford school. A. Calculate the test statistic and the p-value. B. State the conclusion in context.
Use technology to find the P-value for the hypothesis test described below. The claim is that for a smartphone carrier's data speeds at airports, the mean is u = 16.00 Mbps. The sample size is n = 20 and the test statistic is t = 1.776.
aps Microsoft Word -... 12) and 13) Hypothesis testing for proportions You must show your work: 1. Clearly state the significance level, sample size, sample proportion 2. Clearly state the null hypothesis and alternative hypothesis 3. Present the test statistics (z-score) and P-value 4. Decided if the null hypothesis should be rejected for the alternative or not. 5. Write out the conclusion to the question. ► The recidivism rate for convicted sex offenders is 15%. A warden suspects that this percent is higher if the sex offender is also a drug addict. Of the 320 convicted sex offenders who were also drug addicts, 58 of them became repeat offenders. What can be concluded at the a = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? Select an answer H₁: ? Select an answer ✓ c. The test statistic ? = d. The p-value = e. The p-value is ? ✓ a f. Based on this, we should g. Thus, the final conclusion is that…
Kelly performs a hypothesis test and calculates a p-value of .489 for her sample data. What decision can be made about the null hypothesis? O fail to reject the null O reject the null
Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=1005 and x=534 who said "yes." Use a 99% confidence level. LOADING... Click the icon to view a table of z scores. Question content area bottom Part 1 a) Find the best point estimate of the population proportion p. enter your response here (Round to three decimal places as needed.) Part 2 b) Identify the value of the margin of error E. E=enter your response here (Round to three decimal places as needed.) Part 3 c) Construct the confidence interval. enter your response here<p<enter your response here (Round to three decimal places as needed.) Part 4 d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. A. One has 99% confidence that the interval from the lower bound to the upper bound…
Find test value and p-score.
A hospital has a main campus and three satellite locations. Management wants to reduce waiting time for ER cases. A random sample of 11 ER cases at each location was selected, and the waiting time was measured. Excel.) Complete parts (a) through (d) to determine if there is statistical evidence of a difference in the mean waiting times betweeen the four locations. a. State the two hypotheses. Choose the correct answer below. O B. Ho: H1 = H2 = ••• = H4 H;: 41 H2# • • • # µ4 O A. Ho: H1 =H2 = ••• = H4 H;: Not all H are equal (where j= 1,2,.4) OC. Họ: H1 = H2 = • •• = H1 H;: 41 # H2# • •• #H11 D. Ho: H1 = H2= • •• - H11 H;: Not all H; are equal (where j= 1,2,.,11) b. At the 0.05 level of significance, state the test statistic. (Round to two decimal places to the right of the decimal point as needed.) O A. FSTAT = 0.005 , from the first row of the ANOVA table O B. FSTAT = 4.91 , from the first row of the ANOVA table O C. FSTAT = 2.05 , from the first row of the ANOVA table O D. FSTAT =…
Create a research hypothesis that would be answered using either a z- or a t- test. I was thinking of doing a study on college students and the amount of articles they read in one year. Include the following: Introduction: Brief description of the study including the purpose and importance of the research question being asked. What is the null hypothesis? What is the research hypothesis? Participants/Sampling Method: Describe your sampling method. What is your sample size? Who is your population of interest? How representative is the sample of the population under study? Data Analysis: Describe the statistical analysis. What is your variable? What is its level of measurement? What is your alpha level? Results & Discussion: Did you reject the null hypothesis? What information did you use to lead you to your conclusion? Was your p value greater than or less than your alpha? NOTE: You can just make up numbers, but include your made-up p value