An official of a large national union claims that the representation of women in the union is at least 40% (hypothesized population proportion). A researcher believes that the union doesn't have a 40% women representation and conducts the following hypothesis test: Ho: The union has at least 40% women representation Ha: The women representation in the union is less than 40% Using p-value approach and sample information given below, carry out the above hypothesis test. Let the level of significancea for the test in the blank. 0.05. Fill in the required values Sample size (n) Women Men 400 144 256 What is the value of sample proportion? The value of test statistics is (round to two decimal place)

An official of a large national union claims that the representation of women in the union is at least 40% (hypothesized population proportion). A researcher believes that the union doesn't have a 40% women representation and conducts the following hypothesis test: Ho: The union has at least 40% women representation Ha: The women representation in the union is less than 40% Using p-value approach and sample information given below, carry out the above hypothesis test. Let the level of significancea for the test in the blank. 0.05. Fill in the required values Sample size (n) Women Men 400 144 256 What is the value of sample proportion? The value of test statistics is (round to two decimal place)

Name: An official of a large national union claims that the representation
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: An official of a large national union claims that the representation of women in theunion is at least 40% (hypothesized population proportion). A researcher believesthat the union doesn't have a 40% women representation and conducts thefollowing hyp

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

According to a certain government agency for a large country, the proportion of fatal traffic accidents in the country in which the driver had a positive blood alcohol concentration (BAC) is 0.37. Suppose a random sample of 115 traffic fatalities in a certain region results in 56 that involved a positive BAC. Does the sample evidence suggest that the region has a higher proportion of traffic fatalities involving a positive BAC than the country at the a = 0.1 level of significance? Find the test statistic, zo. 20 = (Round to two decimal places as needed.)
A nutrition expert claims that the average American is overweight: To test his claim, a random sample of 25 Americans was selected, and the difference between each person's actual weight and idea weight was calculated. For this data, we have = 16 and 8 = 28.4. Is there sufficient evidence to conclude that the expert's claim is true? Carry out a hypothesis test at a 8% significance level. Hint: Pay attention to the variable being measured: the difference between actual weight and ideal. A positive value indicates that the person is overweight. A. The value of the standardized test statistic (give to 3 decimal places): B. The p-value is (give to 4 decimal places): C. Your decision for the hypothesis test: O A. Reject Ho- OB. Reject Ha C. Do Not Reject Ha- O D. Do Not Reject Ho- E
For the reaction time experiment, perform a hypothesis test to assess whether there is a difference in completion time, on average, when undergraduate students at UM use their dominant vs. non-dominant hand, using a 5% significance level. Be sure to include: 1.a) Definition of the parameter of interest in context 1.b) Your hypotheses and results of your test. You can include either a screenshot from Rstudio (if available) or a table of important values (test statistic, distribution, and p-value) calculated by hand. 1.c) An evaluation of the p-value and conclusion in context 1.d) Define alpha and power in context 1.e) Explain two ways in which you could increase the power of this test
According to the Center of Disease Control and Prevention (CDC), 18% of adults in the U.S. over 19 are vaping. A medical doctor feels the percent is higher. He performs a hypothesis test at a 1% significance level and finds the p-value to be 0.0073The conclusion would be: a. There is not enough evidence to support the doctor's claim. b. No conclusion can be made. c. There is enough evidence to support the doctor’s claim
The Gallup Poll asked 1015 U.S. adults whether they believed that people should pay sales tax on items purchased over the internet. Of these, 477 said they supported such a tax. Does the survey provide convincing evidence that less than 42% of U.S. adults favor an internet sales tax? Use the 0.05 level of significance. 1. STATE THE NULL AND ALTERNATIVE HYPOTHESIS: 2. T STATISTIC/ P VALUE 3.REJECT OR FAIL THE NULL HYPOTHESIS 4. IS THE CLAIM SUPPORTED AT THE 0.05 LEVEL OF SIGNIFICANCE?
Based on their records, a hospital claims that the proportion, p, of full-term babies born in the community that weigh more than 7 pounds is 36%. A pediatrician who works with several hospitals in the community would like to verify the hospital's claim. In a random sample of 180 babies born in the community, 46 weighed over 7 pounds. Is there enough evidence to reject the hospital's claim at the 0.01 level of significance? Expahel Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis H and the alternative hypothesis H. H : 0 H, :0 (b) Determine the type of test statistic to use. O-0 OSO (Choose one) ▼ (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the p-value. (Round to three or more decimal places.) (e) Can we reject the claim that the proportion of full-term babies born in the community that…
A business owner claims that the proportion of take out orders is greater than 25%. To test this claim, the owner checks the next 250 orders and determines that 60 orders are take out orders The following is the setup for this hypothesis test: Ho :p 0.25 Ha p>0.25 In this example, the p-value was determined to be 0.643. come to a conclusion and interpret the results for this hypothesis test for a proportion (use a significance level of 5%) Select the correct answer below: O The decision is to reject the Null Hypothesis. The conclusion is that there is enough evidence to support the claim. The decision is to fail to reject the Null Hypothesis. The conclusion is that there is not enough evidence to support the claim.
A researcher claims that the incidence of a certain type of cancer is less than 5%. To test this claim, the a random sample of 4000 people are checked and 170 are determined to have the cancer. In this example, the p-value was determined to be 0.015. Come to a conclusion and interpret the results for this hypothesis test for a proportion (use a significance level of 5%)
An automotive company is conducting a survey concerning consumer buying preferences of a particular truck. The company wants to know whether the truck appearance, miles per gallon (MPG), or fixed price most influenced the consumer’s buying decision. A population sample of 500 individuals, both male and female, will be surveyed. State the null and alternative hypothesis if your were to test whether there is any difference in proportion using the three different criterion to purchase the given car based on gender.
High-powered experimental engines are being developed by the Hendrix Motor Company for use in their new sports coupe. The engineers have calculated the maximum horsepower for the engines to be 650HP. Sixteen engines are randomly selected for testing. Perform a hypothesis test to determine whether the data suggests that the average maximum horsepower for the experimental engine is significantly different than the maximum horsepower calculated by the engineers. Assume the data are normally distributed and use a significance level of 0.01. Maximum Horsepower (HP) 634 607 688 630 695 635 657 655 678 671 676 689 672 687 680 677 Copy Data Step 2 of 3 : Compute the value of the test statistic. Round your answer to three decimal places.
Only 10% of registered voters voted in the last election. Will voter participation increase for the upcoming election? Of the 399 randomly selected registered voters surveyed, 52 of them will vote in the upcoming election. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer
Use the technology display, which results from the head injury measurements from car crash dummies listed below. The measurements are in hic (head injury criterion) units, and they are from the same cars used for the table below. Use a 0.10 significance level to test the given claim. Test the null hypothesis that head injury measurements are not affected by an interaction between the type of car (foreign, domestic) and size of the car (small, medium, large). What do you conclude? Click the icon to view the data table and technology display. What are the null and alternative hypotheses? O A. Ho: Head injury measurements are not affected by an interaction between type of car and size of the car. H₁: Head injury measurements are affected by an interaction between type of car and size of the car. O C. Ho: Head injury measurements are not affected by type of car. H₁: Head injury measurements are affected by type of car. Find the test statistic. F = (Round to two decimal places as needed.)…