Prof. D. Veeashon is interested in what it takes to pass the National Assessment of Basic Statistics (the famous NABS test). She has the research hypothesis that students who study more than 20 hours for the test-that is the population of interest-will score above the national average of 70. She tests this by getting a group of students who plan to take the test and arranging study/tutoring sessions that totaled more than 20 hours for each. D. Veeashon's null hypothesis is: [note: Ho means mu, the population mean according to the null hypothesis] O Po is equal to 0 Po is less than 0 Ho is not known, nor can it be known Po is equal to (or less than) 70 O Ho is greater than 70

Prof. D. Veeashon is interested in what it takes to pass the National Assessment of Basic Statistics (the famous NABS test). She has the research hypothesis that students who study more than 20 hours for the test-that is the population of interest-will score above the national average of 70. She tests this by getting a group of students who plan to take the test and arranging study/tutoring sessions that totaled more than 20 hours for each. D. Veeashon's null hypothesis is: [note: Ho means mu, the population mean according to the null hypothesis] O Po is equal to 0 Po is less than 0 Ho is not known, nor can it be known Po is equal to (or less than) 70 O Ho is greater than 70

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 effective learning, an instructor advised his students to practice solving statistical problems on StatCrunch, a web-based software, at least 7 hours per week. In an in class activity, a student surveyed 15 of her 35 classmates to assess the number of hours they spend per week practicing statistics on StatCrunch. The following data was collected: 6.5, 4, 3.5, 0, 12, 5, 12, 15, 12, 0, 1, 8, 0.5, 2, 7. Is there strong evidence that the mean number of hours of StatCrunch usage in the entire class is larger than 7? Let the confidence level be 95% Find the mean Standard deviation T / z score Find the critical score Draw the normal curve with critical tscore and test statistic. Make a conclusion
A researcher has found a strong relationship between level of education and income and concludes that “higher levels of education cause higher income.” What error has been made?
People often say “Distance makes the heart fonder.” Interestingly, due to pandemic related lockdowns, some persons have been implicitly or explicitly indicating that it is indeed true as they have been struggling with their relationships due to lack of time apart from their partner. A researcher who is interested in such an issue decided to collect data on the level of rage/edginess that exist among a few couples due to lockdowns. Participants were asked to rank the level of hostility they think they have been exerting towards their partner due to having to spend more time than they usually do with them. The resulting data is presented on page two (2). 2 *14 is the highest level of hostility. Level of hostility Number of partners 0-1 4 2-3 11 4-5 8 6-7 20 8-9 25 10-11 12 12-13 12 13-14 4 a. Calculate the following: i. Mean ii. Mode iii. standard deviation iv. coefficient of variation v. Pearson's 1st measure of skewness b.Interpret the results of your calculations in
what are the applications of statistics on an academic setup?
What is the name of the test used?
A survey6 of articles from the New England Journal of Medicine (NEJM) classified them according to the principal statistics methods used. The articles recorded were all noneditorial articles appearing during the indicated years. Let's just look at whether these articles used statistics at all.
A director of research for a radio company conducted a survey of listener preferences and collected information on demographics as well as preferred music. When reviewing the results, he discarded all responses in which a non-Hispanic listener chose Spanish-language music as the favorite genre. Is this an acceptable practice in statistics? Why or why not? Please use terminology associated with statistical practices to explain your answer.
Describe three research questions that could be tested using an independent samples t-test .
On average, a sample of n = 36 scores will provide a better estimate of the population mean than a sample of n = 49 scores from the same population.
Your boss wants to use absenteeism rates to predict which employees will most likely quit during the next year. What statistic should you use here?
It is a type of statistics wherein the method used to determine something about a population is based on sample.
For effective learning, an instructor advised his students to practice solving statistical problems on StatCrunch, a web-based software, at least 7 hours per week. In an in class activity, a student surveyed 15 of her 35 classmates to assess the number of hours they spend per week practicing statistics on StatCrunch. The following data was collected: 6.5, 4, 3.5, 0, 12, 5, 12, 15, 12, 0, 1, 8, 0.5, 2, 7. Is there strong evidence that the mean number of hours of StatCrunch usage in the entire class is larger than 7? Let the confidence level be 95% Use Microsoft excel to do the following. State the hypothesis Construct one sample t-test. Provide the table from excel Draw the rejection region from excel What is the p-value? Conclusion is the hypothesis rejected pr not?