The average American consumes 89 liters of alcohol per year. Does the average college student consumeless alcohol per year? A researcher surveyed 13 randomly selected college students and found that theyaveraged 69.4 liters of alcohol consumed per year with a standard deviation of 24 liters. What can beconcluded at the the a =0.01 level of significance?a. For this study, we should use Select an answerb. The null and alternative hypotheses would be:Но: ?Select an answer vH1:Select an answer vc. The test statistic ? v(please show your answer to 3 decimal places.)=d. The p-value =(Please show your answer to 4 decimal places.)%3De. The p-value is ? vaf. Based on this, we should Select an answer v the null hypothesis.g. Thus, the final conclusion is that ...O The data suggest the populaton mean is significantly less than 89 at a = 0.01, so there isstatistically significant evidence to conclude that the population mean amount of alcoholconsumed by college students is less than 89 liters per year.O The data suggest the population mean is not significantly less than 89 at a =statistically insignificant evidence to conclude that the population mean amount of alcoholconsumed by college students is equal to 89 liters per year.0.01, so there isThe data suggest that the population mean amount of alcohol consumed by college students isnot significantly less than 89 liters per year at a = 0.01, so there is statistically insignificantevidence to conclude that the population mean amount of alcohol consumed by collegestudents is less than 89 liters per year.%3D

Name: The average American consumes 89 liters of alcohol per year. Does the
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: The average American consumes 89 liters of alcohol per year. Does the average college student consumeless alcohol per year? A researcher surveyed 13 randomly selected college students and found that theyaveraged 69.4 liters of alcohol consumed per y

Answered: Image /qna-images/answer/82cb906c-6e1c-42ea-a3bf-9c7f985c0b1c.jpg

Math

Statistics

The average American consumes 89 liters of alcohol per year. Does the average college student consume less alcohol per year? A researcher surveyed 13 randomly selected college students and found that they averaged 69.4 liters of alcohol consumed per year with a standard deviation of 24 liters. What can be concluded at the the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?v| Select an answer ♥ Hj: ?v Select an answer v c. The test statistic ? v = (please show your answer to 3 decimal places.)

The average American consumes 89 liters of alcohol per year. Does the average college student consume less alcohol per year? A researcher surveyed 13 randomly selected college students and found that they averaged 69.4 liters of alcohol consumed per year with a standard deviation of 24 liters. What can be concluded at the the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?v| Select an answer ♥ Hj: ?v Select an answer v c. The test statistic ? v = (please show your answer to 3 decimal places.)

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

We want to conduct a hypothesis test of the claim that the population mean reading speed of second graders is different from 27 words per minute. So, we choose a random sample of students' reading speeds. The sample has a mean of 27.3 words per minute and a standard deviation of 2.6 words per minute. For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. (a) The sample has size 100, and it is from a non-normally distributed population with a known standard deviation of 3.3. O It is unclear which test statistic to use. (b) The sample has size 11, and it is from a normally distributed population with an unknown standard deviation. O z = O t = O It is unclear which test statistic to use.
A random sample of 43 subjects who identified themselves as compulsive buyers was obtained and given a questionnaire. They had a mean questionnaire score of 0.62 with a standard deviation of 0.16. Test the claim that the population of self-identified compulsive buyers has a mean greater than the mean of 0.55 for the general population. Use a 0.05 significance level. State the null and alternative hypotheses. O A. Ho: p= 0.55 H p#0.55 Ο Β. H μ#0.55 Ha: µ = 0.55 OC. Ho: H=0 55 H µ 0.55 Find the z-score. z= %=(Round to two decimal places as needed.) Find the P-value. The P-value is (Round to four decimal places as needed.) State the conclusion. O A. The P-value is less than or equal to the significance level. There is not sufficient evidence to support the claim that the population of self-identified compulsive buyers has a mean greater than the mean of 0.55 for the general population.
A large international company with over 1.5 million employees wants to estimate how many of their employees have a cholesterol level that is higher than the recommended level. The company collects data from a random sample of employees and creates a 95% confidence interval for the population mean cholesterol level for all company employees. The upper bound of a 95% confidence interval for the population mean cholesterol level was 261.48, and the width of the same 95% confidence interval was 10.44. In this confidence interval, what is the sample mean (x bar) cholesterol level? Provide your answer as a number rounded to two decimal places
We want to conduct a hypothesis test of the claim that the population mean reading speed of second graders is different from 30.3 words per minute. So, we choose a random sample of students' reading speeds. The sample has a mean of 29.6 words per minute and a standard deviation of 3.4 words per minute. For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. (a) The sample has size 18, and it is from a normally distributed population with an unknown standard deviation. z = t = It is unclear which test statistic to use. (b) The sample has size 17, and it is from a normally distributed population with a known standard deviation of 3.5. z = t = It is unclear which test statistic to use.
Records indicate that the mean weight of mature rainbow trout in Eagle Creek is 1.75 kg with a standard deviation of 0.37 kg. After years of marked oxygen depletion from pollutants in the creek, you want to perform a hypothesis test to see if the standard deviation, ơ, of weights has changed. To do so, you measure the weights of 19 randomly chosen mature rainbow trout from the creek and find that the sample standard deviation is 0.49 kg. Under the assumption that current weights of mature rainbow trout in the creek follow a normal distribution, you will perform a chi-square test. Find x, the value of the test statistic for your chi-square test. Round your answer to three or more decimal places. 2
Which of the following is closest to the correct test statistic for this hypothesis test?
An economist collects a simple random sample of 32 teacher's salaries in Cititon, and finds a mean of $67,000 and a standard deviation of $8,000. Is there enough evidence to conclude, at a significance of alpha= 0.05, that the mean salary of teachers in Cititon is different than $70,000? What is the test statistic? What is the null hypothesis? What conclusion do we draw? Do we reject the null hypothesis? What is/ are the critical value(s)? What is the alternative hypothesis? What is the p-value for the problem above?
We want to conduct a hypothesis test of the claim that the population mean reading speed of second graders is different from 28.1 words per minute. So, we choose a random sample of students' reading speeds. The sample has a mean of 28.4 words per minute and a standard deviation of 2.9 words per minute. For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. (a) The sample has size 19, and it is from a normally distributed population with a known standard deviation of 2.8. "our re Ot = O It is unclear which test statistic to use. (b) The sample has size 20, and it is from a population with a distribution about which we know very little. O It is unclear which test statistic to use. Check © 2022 McGra ace
The recidivism rate for convicted sex offenders is 13%. A warden suspects that this percent is different if the sex offender is also a drug addict. Of the 309 convicted sex offenders who were also drug addicts, 31 of them became repeat offenders. What can be concluded at the a = 0.01 level of significance? For this study, we should use Select an answer The null and alternative hypotheses would be: Ho: ? ✓ Select an answer H₁: ? Select an answer (please enter a decimal) (Please enter a decimal) The test statistic ? ✓ = The p-value = The p-value is ? va Based on this, we should [Select an answer the null hypothesis. Thus, the final conclusion is that ... (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) O The data suggest the population proportion is not significantly different from 13% at a = 0.01, so there is statistically insignificant evidence to conclude that the population proportion of convicted sex offender drug addicts who become…
A quiz related to digital knowledge was conducted. The quiz had 10 questions and covered topics such as the purpose of browser cookies, phishing scams, and privacy policies. The survey was given to 50 people. The mean score is 4.1 with a standard deviation of 2.6. We want to know if the data provide evidence that the mean score in the population is lower than 5. We will use alpha = 0.05 to make our decision. What is the null hypothesis for this question? Group of answer choices a. The proportion of people who pass the test is 5. b. The mean test score of the population is 5. c. The mean test score of the 50 people who took the test is 5. d.The standard deviation is 2.6
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
65 homeless people in San Jose were asked their age. The sample mean age was 33.2 years. Let x be a random variable representing ages of homeless people in San Jose. Assume that x has a normal distribution and o = 7.3 years. Do the data indicate that the mean age of the population of homeless people in San Jose is less than 35 years old? Use a = 0.05. Identify the following in your answer. 1. Identify the null hypothesis Ho and alternate hypotheses H, for the problem. 2. Identify the sample statistic, test statistic, p-value and calculator key used: Sample Statistic (sample mean) (Stated in problem) = Test Statistic (z) (Round to two decimal places) %3D P-value: (Round to four decimal places) = Calculator key used: 3. Identify the significance level and determine if you reject or fail to reject the null hypothesis. significance level = Do you reject or fail to reject Ho ? 4. State your conclusion. Upload your answer. Remember you can only upload one document. Upload Choose a File