A researcher wishes to study the relationship between gender and cellphone ownership. The random sample of adults produced thefollowing expected frequencies and the squared difference of the observed and the expected frequencies.0.0(1, 1)(1,2)2. 1)2, 2)588.60501.40491.40418.60(E457.96457 95268.96268.96What is the sample size of aduts participated in this study?OA 2000OB. 1454OC 1500OD. 1954

Answered: Image /qna-images/answer/18fc3b91-44bc-41ea-9cd7-faf0d39d0829.jpg

Answered: A researcher wishes to study the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The data from an independent-measures research study produce a sample mean difference of 4 points and a pooled variance of 16. If there are n = 8 scores in each sample, then what is the estimated standard error for the sample mean difference? Select one: O a. 4 O b. 16 O c. 128 O d. 2
The points scored by teams in the first round of the Statistics Games have a mean of 135 points and a standard deviation of 27 points. A random sample of 36 teams is taken. What is the mean and standard deviation of the sampling distribution of sample means? A The mean is 22.5, and the standard deviation is 4.5. B. The mean is 22.5, and the standard deviation is 27. C. The mean is 135, and the standard deviation is 4.5. D. The mean is 135, and the standard deviation is 27.
The following table shows the results of an analysis of variance comparing three treatment conditions with a sample of n = 10 participants in each treatment. Note that several values are missing in the table. What is the missing value for SStotal? Source ss df MS F Between 20 Within 54 Total ?? O 74 22 30 54
A report stated that after obtaining a bachelor's degree, 43% of college students enroll in a graduate degree program. For a random sample of 61 undergraduate students, find the mean, variance and standard deviation for the number of students who will enroll in a graduate degree program after obtaining a bachelor's degree. a.) mean b.) variance c.) standard deviation (round to two decimal places)
Using a pooled sample estimator, o , assumes the two populations have O A. different means. O B. the same mean. O C. the same variance. O D. different variances.
What does the t test for the difference between the means of 2 independent populations assume? A. The sample sizes are equal. B. The sample variances are equal. C. The populations are approximately normal. D. All of the above
An analysis of variance produces SSbetween = 75 and MSbetween = 15. In this analysis, how many treatment conditions are being compared? Select one: a. 3 b. 4 c. 5 d. 6
A random sample of 50 pieces of candy from a bag of assorted types is examined. Which of the following types of candy contributes the most to the chi-square statistics and why?
A researcher looked an an average time (in minutes) it takes a random sample of customers to be served in a restaurant. From 40 customers, the following information was obtained. 8 10 20 14 15 16 12 10 12 20 15 10 10 15 8 15 10 12 18 12 16 10 9 12 15 10 16 15 8 12 18 8 8 16 12 13 12 10 8 10 Answer the following questions: 1. What is the average wait time (the mean of the sample)? _______________________ 2. This value is called the _________________________________________of the population mean μ. 3. Based on the observation of the mean, would you patronize the restaurant? Explain your answer. ____________________________________________________________________________________________________________________________________________________________________________________________________________________
A newspaper article reported that the typical American family spent an average of $86.79 for Halloween candy and costumes last year. A sample of N = 16 families this year reported spending a mean of M = $90, with s = $21. What statistical test would be used to determine whether these data indicate a significant change in holiday spending? single-sample t test z test effect-size test paired-samples t test

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