It is hypothesized that there is a difference in job satisfaction between those who receive regular feedback on their job performance and those who receive irregular feedback." is an example of which type of hypothesis? a. Directional hypothesis b. Not a hypothesis c. Null hypothesis d. Non-directional hypothesis

It is hypothesized that there is a difference in job satisfaction between those who receive regular feedback on their job performance and those who receive irregular feedback." is an example of which type of hypothesis? a. Directional hypothesis b. Not a hypothesis c. Null hypothesis d. Non-directional hypothesis

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

For a two-tailed hypothesis test evaluating the significance of a correlation, the null hypothesis states that the sample correlation is zero. True or false
at Charlie H... Assume you are a psychologist studying the relationship between chocolate consumption and happiness. You ask 10 participants to rate how much chocolate (in ounces) they ate in the last week, and how happy they felt throughout the week on the average, on a scale ranging from 1 (extremely unhappy) to 10 (extremely happy). You hypothesize that there is some relationship between chocolate consumption and happiness. Here are their scores: Participant Chocolate eaten during week (oz) # 1 2 3 st 4 5 6 7 5 6 3 7 4 6 10 Happiness rating 3 9 7 6 8
In hypothesis testing, if the null hypothesis is rejected, which of the following is accepted?A. rejection regionB. acceptance regionC. hypothesized meanD. alternative hypothesis
Suppose that for a particular hypothesis test, the consequences of a Type I error are very serious. Would you want to carry out the test using a small significance level a (such as 0.01) or a larger significance level (such as 0.10)? Explain the reason for your choice. The probability of a Type I error is equal to the significance level, so a larger significance level should be used. O The probability of a Type I error is equal to one minus the significance level, so a larger significance level should be used. The probability of a Type I error is equal to one minus the significance level, so a small significance level should be used. The probability of a Type I error is equal to the significance level, so a small significance level should be used.
Last year's mean hourly wage (in dollars) for all hospital clerical workers in a large state was 8. An administrator for the state believes that this year's mean hourly wage for hospital clerical workers is greater than last year's mean. She hires statisticians to sample a number of hospital clerical workers and to carry out a hypothesis test. State the null hypothesis H, and the alternative hypothesis H, that would be used for this test. H. 文 H. OO ロ=ロローロ

Which of the following are FALSE statements? I. If there is sufficient evidence to reject a null hypothesis at a 5% significance level, then there is insufficient evidence to reject the null hypothesis at 10% significance level. II. p-value is always the same from one sample to another sample. III. The hypothesis null and alternative statements most likely about population parameter than the sample statistic. A. I and II only B. I and III only C. Il and III only D. 1, II, and II A. D Answer A survey is conducted on 498 randomly selected Malaysian parents. 58% of them said that children should be allowed to bring a mobile phone to school. Which of the following is CORRECT based on the survey? u = 58% and x is known X = 58% but µ is unknown C. A. p = 58% and pis unknown p = 58% and pis known D. A Answer B. B.
A teacher is comparing the mean study time of his freshmen and senior students. He believes that his senior students spend more time studying per week than his freshmen students and decides to perform a hypothesis test on this belief. a. suppose the decision of the hypothesis test is to reject the null hypothesis. If, in reality, freshmen study for a mean of 10 hours per wekk and seniors study for a mena of 15 hours per week, was an arror made? If so, what type? b. Suppose the decision of the hypothesis test is to fail to reject the null hypothesis. If, in reality, freshmen study for a mean of 15 hours per week and seniors study for a mean of 15 hours per week, was an error made? if so, what type?
Suppose that a hypothesis test is performed at a small significance level. State the appropriate conclusion in each case by referring to Key Fact 2. a. The null hypothesis is rejected.b. The null hypothesis is not rejected.
Using the accompanying data of restaurant sales, determine if the vanance of weekday sales is the same as that of weekend sales for each of the three variables (lunch, dinner, and delivery). Click the icon to view the restaurant sales data. Is there sufficient evidence at the 0.01 level of significance to condude that the vanance of weekday sales is the same as that of weekend sales for lunch sales? Determine the null hypothesis, H. and the alternative hypothesis. H₁. Let weekend sales be population 1 and weekday sales be population 2. H₂ Hi 11 (Type integers or decimals. Do not round.) Compute the test statistic (Round to two decimal places as needed.) Survey data Date Day Lunch Sales $ Dinner Sales $ Delivery Sales $ 4-Apr Wednesday 358 789 293 11-Apr Wednesday 386 665 299 18-Apr Wednesday 426 628 289 25-Apr Wednesday 331 729 253 3-Apr Tuesday 296 848 325 10-Apr Tuesday 308 572 328 17-Apr Tuesday 297 568 358 24-Apr Tuesday 229 529 402 5-Apr Thursday 402 808 273 12-Apr Thursday 420…
iPad Kindle 9 10 5 9 8 10 7 9 8 12 9 10 11 10 11 Consumer Reports would like to conduct a hypothesis test to determine if the average battery life for an iPad is different from the average life for a Kindle Fire. The data provided here represent the battery life from a random sample of iPads and Kindle Fires in hours. (a) Conduct a two-sample t test to test if the average battery life for an iPad is different from the average life for a Kindle Fire. Provide the output below starting at the Yellow highlighted cell. Use 1% significance level. (b) Compute a 99% confidence interval for the difference in the average battery life for an iPad and the average life for a Kindle Fire. Provide your final anwers in the yellow highlighted cells below. ( Keep 3 or more decimal places) Show your work below those cells. Upper= Lower=
A researcher is conducting an experiment to evaluate a treatment that is expected to increase the scores for individuals in a population that is known to have a mean of ? = 80. The results will be examined using a one-tailed hypothesis test. Which of the following is the correct statement of the null hypothesis? ? < 80 ? ≥ 80 ? > 80 ? ≤ 80
Significance testing is similar to hypothesis testing, except rather than comparing a p-value to a level of significance to reach a conclusion, the p-value is used as a measure for how strong the information from the sample is as evidence against the null hypothesis. A small p-value indicates that the sample provides strong evidence against the null hypothesis and is statistically significant. A larger p-value indicates that the sample provides weaker evidence against the null hypothesis and is not statistically significant. Suppose that two rival scientists want to conduct the following hypothesis test for a certain population: Ho: ≤ 60 Hy: μ > 60 Assume that the mean of the population is known to be 8.4. Scientist 1 took a sample of 36 from the population and got a sample mean of 63.164000. What is the approximate p-value for Scientist 1's data? Scientist 2 took a sample of 8 from the population and got a sample mean of 64.276582. What is the approximate p-value for Scientist 2's…