Which of the following is a probabilisticsampling approach that does not requirethe use of a sampling frame?A) StratifiedB) Frame-freeC) ConvenienceD) Skipped stepE) JudgmentF) InterceptG) ClusterH) Exploratory

Probability sampling or probabilistic sampling means that every member of the target population…

Answered: Which of the following is a…

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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When two births are randomly selected, the sample space for genders is bb, bg. gb, and gg. Assume that those four outcomes are equally likely. Construct a table that describes the sampling distribution of the sample proportion of girls from two births. Does the mean of the sample proportions equal the proportion of girls in two births? Does the result suggest that a sample proportion an unbiased estimator of a population proportion? For the entire population, assume the probability of having a boy is the probability of having a girl is , and this is not affected by how many boys or girls have previously been born. 2 Determine the probabilities of each sample proportion. Probability Sample proportion of girls Tune intanare or cimnlifiad frartinne
An airline operates a call center to handle customer questions and complaints. The airline monitors a sample of calls to help ensure that the service being provided is of high quality. Ten random samples of 100 calls each were monitored under normal conditions. The center can be thought of as being in control when these 10 samples were taken. The number of calls in each sample not resulting in a satisfactory resolution for the customer is as follows. 4 5 3 2 3 3 4 6 4 8 (a) What is an estimate of the proportion of calls not resulting in a satisfactory outcome for the customer when the center is in control? (b) Construct the upper and lower limits for a p chart for the manufacturing process, assuming each sample has 100 calls. (Round your answers to four decimal places.) UCL - LCL = (c) With the results of part (b), what conclusion should be made if a sample of 100 has 13 calls not resulting in a satisfactory resolution for the customer? Since the sample proportion = is --Select- |the…
determine the degrees of freedom if necessary
Define the related-repeated (pre/post) two-sample t-test and the related-matched two-sample t-test.
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The business college wants to determine the proportion of business students who have extended time between classes. If the proportion differs from 30%, then the lab will modify a proposed enlargement of its facilities. Suppose a hypothesis test is conducted and the test statistic is 2.5. Find the P-value for a two-tailed test of hypothesis.
I am to do a project for an inferential statistics class and I would like some basic guidance. I am to propose a research question. My proposed research question is "Does drinking stimulants such as coffee improve a student's grades?" It was suggested to me that my population could be the students at my school. I will impliment simple random sampling by devising two groups of students, one being a group who often consume stimulants like coffee and another who seldomly or never consume a stimulant such as coffee. Upon gathering the data of each group I will need to compare the average grades for each group using independent samples t-test for both respective groups. My Hypothesis test will be a two independent samples test for mean. My question is what are the limitations? (How could bias and/or confounding variables could limit this study?) Also what graph do you think would be best served to visually display the data?
4. What would the sampling distribution of this estimator be? Why?
Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and Population 2 does not. The data from these two samples is given below: Population 1: 69, 65, 66, 71, 67, 09, 65 Population 2: 78, 76, 69. 77, 70, 60, 69, 68 Is there evidence, at an a- 0.035 level of significance, to conclude that there those who exercise regularly have lower resting heart rates? (Assume that the popuation variances are equal and that the population distributions are normal) Carry out an appropriate hypothesis test, filing in the information requested. A. The value of the test statistic: Note: For the next part, your answer should use interval notation An answer of the form (-00, a) is expressed (-infty, a), an answer of the fom (6, o0) is expressed (b, intty), and an anawer of the form (-oo, a) U (b, ) is expressed (-inity, aLb, infty. Hint: For example, note that a rujection region of 'reject Ho if t> t," can be expressed as "reject Ho ift belongs to the interval…
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The principal of a certain high school claims that 85% of all the students is in favor of the new school uniform. A Statistics teacher asked his students to verify the claim. Suppose that 451 out of the 550 randomly selected students indicated that they are in favor of the new school uniform. At 0.05 level of significance, is there enough evidence to conclude that the percentage of students who are in favor of the new uniform is different from 85%?

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Which of the following is a probabilistic sampling approach that does not require the use of a sampling frame?