testingthehypothesesH:л=0.40, H :л>0.40, at 5 % level of0Insignificance. if the sample proportion is 0.45 andthe sample size is 49; which one of the followingstatements is incorrect?O A. A one-tail is used.O B. The standard error is 0.0070O C. The test statistic is 0.7143OD. p-value is 0.2389

Answered: Image /qna-images/answer/f0add87c-4c27-41a5-be02-95df7e49561a.jpg

Answered: significance. if the sample proportion…

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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STATISTICS AND PROBABILITY Multiple Choice! No long explaantion needed. THUMBS-UP will be given! Which statement(s) is/are FALSE? A. The mean of the sampling distribution of the sample mean is equal to the sample mean. B. The standard error of the sample mean is not affected by the sample size. A. both A and B B. neither A nor B C. A D. B
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You would like to know the average hourly wage in your area. You ask 20 people, and find a sample mean of 8.50 dollars. The population standard deviation is 2.89 dollars. Assume that distribution is normal. a. Give a point estimate for the mean hourly wage.b. Give the 90% margin of error for the mean. c. Write a sentence about the results. The average hourly wage in my area is about ________, give or take _______.
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Describe the sampling distribution of p. Assume the size of the population is 15,000. n= 400, p = 0.4 Choose the phrase that best describes the shape of the sampling distribution of p below. O A. Approximately normal because ns0.05N and np(1- p) < 10. O B. Not normal because ns0.05N and np(1-p) 2 10. O C. Approximately normal because ns0.05N and np(1- p) 10. O D. Not normal because n<0.05N and np(1-p)< 10. Determine the mean of the sampling distribution of p. (Round to one decimal place as needed.) Determine the standard deviation of the sampling distribution of p. OA = (Round to three decimal places as needed.)
The first pic is the question. Since some tutors have been solving the problems wrong recently (no judgment), I’ve added a sample question to solve problem.
Given the data set below find the following; 45, 34, 65, 20, 15, 25 a. Compute the sample mean b. Compute the sample standard deviation c. Compute the standard error of the mean.
A different I/O psychologist wants to know if there is a difference in worker evaluations depending if the employee is a male or female. A group of managers were recruited and each rated both 15 men and 15 women employee evaluations on a scale of 0-10. The ratings on the worker evaluations were recorded for each manager. Which statistical test would be best to determine if there is a significant difference between groups? one-sample t-test dependent samples t-test ANOVA
Answers only. Thank you An instructor recorded the following number of correct items (in a quiz with 10 questions) for the 12 students present: 7, 4, 2, 2, 2, 9, 10, 6, 7, 3, 8, 5. What is the level of measurement of the data obtained?* a. Ordinal b. Ratio c. Interval d. Nominal 2. The purpose of stratified random sampling is to make certain that* a. the sample is more representative of the target population than the accessible population. b. the participants chosen for the study are the ones most likely to react to the treatment. c. every member of the population has an equal chance of being selected for the sample. d. the sample proportionately represents individuals from different categories of the population 3. In a simple random sample, a. each member in the population has a chance of being included in the sample. b. not all members in the population are given the chance of being selected. c. each…
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Perform the indicated goodness-of-fit test. 23) Using the data below and a 0.05 significance level, test the claim that the responses occur 23) with percentages of 15%, 20%, 25%, 25%, and 15% respectively. Response A B C D E Frequency 12 15 16 18 19
If the standard error for a sample of size 50 is ?=135.21s then the standard error for the mean ?s which of the following: 2.70 135.21 19.12 67.36
The sample mean is the point estimator of O A. u О В. р O C. X O D. o

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significance. if the sample proportion is 0.45 and the sample size is 49; which one of the following statements is incorrect? O A. A one-tail is used. O B. The standard error is 0.0070 C. The test statistic is 0.7143 OD. p-value is 0.2389