Assess whether the median hemoglobin level for female vegetarians is less than 13.0g/dl from the sample data as follow: 12.3 13.1 11.3 10.1 14.0 13.3 10.5 12.3 10.9 11.9 Use Wilcoxon sign test at 5% confidence level to answer the following The null hypothesis The alternative hypothesis The total + sign The total - sign =Test statistic =Critical value a= 0.05 tailed test

Assess whether the median hemoglobin level for female vegetarians is less than 13.0g/dl from the sample data as follow: 12.3 13.1 11.3 10.1 14.0 13.3 10.5 12.3 10.9 11.9 Use Wilcoxon sign test at 5% confidence level to answer the following The null hypothesis The alternative hypothesis The total + sign The total - sign =Test statistic =Critical value a= 0.05 tailed test

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

See similar textbooks

Similar questions

(c) Rashid carried out pyrolysis of sawdust in a semi-batch reactor and obtained replicates of measurement under the same conditions in order to test the precision of the method. The recorded values for biochar are 22.23, 22.18, 22.25, 22.09, and 22.17 wt%. Using a suitable test, analyze whether the value of 22.09 wt% is a valid measurement at a 95% confidence level?
What proportion of students are willing to report cheating by other students? A student projectput this question to an SRS of 172 undergraduates at a large university: "You witness two students cheating on aquiz. Do you go to the professor?" The Minitab output below shows the results of a significance test and a 95%confidence interval based on the survey data.El SessionTest and Cl for One ProportionTeat of p = 0.5 vs p not = 0.5Sample1X 1 Sample P95: CI246 439 0.560364 (0.513935, 0.606794)
Cushman and Wakefield reported that the average annual rent for office space in Tampa was $17.63 per square foot. A real estate agent selected a random sample of 15 rental properties and found the mean rent was $18.72 per square foot, and the sample standard deviation was $3.64. At a level of significance of 0.01, test the claim that the average annual rent is more than $17.63.(T-Test) Is the claim supported by this Hypothesis Test?
In a recent study of 42 eighth graders, the mean number of hours per week that they played video games was 19.6 with a population standard deviation of 5.8 hours. Compute the 98% confidence interval for μ. Group of answer choices (18.3, 20.9) (19.1, 20.4) (14.1, 23.2) (17.5, 21.7) Flag question: Question 7 Question 7 1 pts A 90% confidence interval for the mean percentage of airline reservations being canceled on the day of the flight is (1.2%, 4.5%). What is the point estimator of the mean percentage of reservations that are canceled on the day of the flight? Group of answer choices 2.85% 3.3% 1.65% 2.25% Flag question: Question 8 Question 8 1 pts The cell phone conversations of a random sample of 50 students has a standard deviation of 9.7 minutes. Find the margin of error, E, using a 90% confidence interval. Group of answer choices 0.32 2.26 1.23 1.37 Flag question: Question 9 Question 9 1 pts Determine the sample size needed to estimate μ for the given situation…
A plant manager has collected productivity data for a sample of workers, intending to see whether there is a difference in the number of units they produce on Monday versus Thursday. The results (units produced) are in data table below. Using the 0.01 level of significance, evaluate the null hypothesis that there is no difference in worker productivity between the two days. Identify and interpret the p-value for the test, then construct and interpret the 99% confidence interval for the mean difference in productivity worker Monday Thursday 1 49 46 2 56 59 3 63 65 4 52 57 5 47 45 6 67 71 7 71 70 8 45 49 9 42 43
A plant manager has collected productivity data for a sample of workers, intending to see whether there is a difference in the number of units they produce on Monday versus Thursday. The results are in data table below. Using the 0.01 level of significance, evaluate the null hypothesis that there is no difference in worker productivity between the two days. Identify and interpret the p-value for the test, then construct and interpret the 99% confidence interval for the mean difference in productivity worker Monday Thursday 1 49 46 2 56 59 3 63 65 4 52 57 5 47 45 6 67 71 7 71 70 8 45 49 9 42 43
I need an analysis of the three published betas. I also need Statistical tests of significance for both alpha and beta. Use a 95% confidence level
A large automobile insurance company selected samples of single and married male policyholdersand recorded the number who made an insurance claim over the preceding three yearperiod. Single Policyholders Married Policyholders n1 # 400 n2 # 900Number making claims # 76 Number making claims # 90 a. Use α # .05. Test to determine whether the claim rates differ between single and marriedmale policyholders.b. Provide a 95% confidence interval for the difference between the proportions for thetwo populations.
A researcher believes that there has been a reduction in the mean number of hours that college students spend preparing for final exams. A national study stated that students at a 4-year college spend an average of 23 hours preparing for five final exams per semester with a population standard deviation of 7.3 hours. The researcher sampled 227 students and found a sample mean study time of 19.6 hours. Perform a hypothesis test to determine if the average study time for final exams has decreased. Use a 4% significance level.
The General Social Survey is a survey of opinions and lifestyles of U.S. adults, conducted by the National Opinion Research Center at the University of Chicago. A sample of 81 people aged 18-to-22 reported the number of hours they spent on the Internet in an average week. The sample mean was 8.20 hours, with a sample standard deviation of 9.84 hours. a. Construct and interpret a 95% confidence interval for the mean number of hours per week spent on the Internet by people aged 18-to-22 in the United States. b. Construct and interpret a 99% confidence interval for the mean number of hours per week spent on the Internet by people aged 18-to-22 in the United States.
A computer company claims that the batteries in its laptops last 4 hours on average. A consumer report firm gathered a sample of 16 batteries and conducted tests on this claim. The sample mean was 3 hours 50 minutes, and the sample standard deviation was 20 minutes. Assume that the battery time distribution as normal. a) Test if the average battery time is shorter than 4 hours at a = 0.05. Use the 5-step method. b) Construct a 95% confidence interval of the mean battery time. c) If you were to test H0: µ =240 minutes vs. H1: µ ≠ 240 minutes, what would you conclude from your result in part (b)? d) Suppose that a further study establishes that, in fact, e population mean is 4 hours. Did the test in part (c) make a correct decision? If not, what type of error did it make?
The psychologist claim that obese people participating in her psychotherapy programme will have an average weight loss more than 20.5 kilograms. Test the psychologist claim at a 1% level of significance rounded off to two decimals. Calculate and interpret a 90% confidence interval for the mean weight loss of the population of obese people following the programme rounded off to two decimals.