What is a sampling distribution of a sample statistic?Choose the correct answer below.OA. The sampling distribution of a sample statistic is the list of all possible outcomes of the statistic.B. The sampling distribution of a sample statistic is the list of all the values in the sample.C. The sampling distribution of a sample statistic is a list of all the members of the population from which the sample is being taken.OD. The sampling distribution of a sample statistic is the probability distribution of that statistic.4

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Answered: That is a sampling distribution of 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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Online customer service is a key element to successful online retailing. According to a marketing survey, 30% of online customers take advantage of the online customer service. Assume the population proportion of those who use online customer service is 0.30. Random samples of 100 customers are selected. 95% of the sample proportions centered symmetrically about the sampling distribution mean will be between _________________ and _________________.
John is interested in the number of children per household for house-holds in Tyler, TX. He conducts several phone interviews and collects the following data: 0 3 2 0 2 1 1 0 6 1 (a.) Find the mean, median, and 10%-trimmed mean. (Handwritten) (b.) Find the upper and lower quartiles. (Handwritten) (c.) Find the range, sample variance, sample standard deviation, and interquartilerange. (Handwritten)
A survey was done of 40 people. They were asked: What type of movies would you like to see at this theater? Family, children, comedy, sci-fi, horror, action, or double feature? 40 people answered the following: Family: 37 Children: 18 Comedy: 26 Sci-fi: 12 Horror: 6 Action: 18 Double Feature: 19 Find the following: Probability Frequency Mean Median Mode Variance or Standard Deviation
The Census Bureau gives this distribution for the number of people in American households in 2016. Family size 1 2 4 6. 7 Proportion 0.28 0.35 0.15 0.13 0.06 0.02 0.01 Note: In this table, 7 actually represents households of size 7 or greater. But for purposes of this exercise, assume that it means only households of size exactly 7. Suppose you take a random sample of 4000 American households. About how many of these households will be of size 2? Sizes 3 to 7? The number of households of size 2 is about The number of households of size 3 to 7 is about
Suppose that in a large population of students, the mean amount of sleep the previous night was ? = 7.2 hours and the standard deviation was ? = 1.55 hours. Consider randomly selected samples of n = 130 students. (a) What is the value of the mean of the sampling distribution of possible sample means?Mean = (b) Calculate the standard deviation, s.d., of the sampling distribution of possible sample means. (Round your answer to three decimal places.) s.d.(x) = (c) Use the Empirical Rule to find values that fill in the blanks at the end of the following sentence. (Round your answers to three decimal places.) For 68% of all randomly selected samples of n = 130 students, the mean amount of sleep the previous night will be between and hours. (d) Use the Empirical Rule to fill in the blanks at the end of the following sentence. (Round your answers to three decimal places.) For 95% of all randomly selected samples of n = 130 students, the mean amount of sleep will be between and hours.
A professor wants to know whether or not there is a difference in comprehension of a lab assignment among students depending on if the instructions are given all in text, or if they are given primarily with visual illustrations. She randomly divides her class into two groups of 15, gives one group instructions in text and the second group instructions with visual illustrations. The following data summarizes the scores the students received on a test given after the lab. Let the populations be normally distributed with a population standard deviation of 5.32 points for both the text and visual illustrations. Text (Group 1) Visual Illustrations (Group 2) 57.3 59 45.3 57.6 87.1 72.9 61.2 83.2 43.1 64 87.3 76.7 75.2 78.2 88.2 64.4 67.5 89 86.2 72.9 67.2 88.2 54.4 43.8 93 97.1 89.2 95.1 52 84.1 Is there evidence to suggest that a difference exists in the comprehension of the lab based on the…
D and E will add follow up question
12need help with parts A, D and E please
can you help for answer this ?
There are three different ways I can go to work in the morning. I want to see if there is a difference in the distributions of travel-times between the three different ways. The sample data is depicted below. I claim there is a difference in mean travel times between the three different routes. I cannot guarantee that the distributions of these travel times are Normal. Travel Time in Minutes Interstate 22 22 21 23 22 21 Route 15 22 18 20 18 Back Roads 19 19 18 19 22 (a) Enter the rank values in the same order as in the original sample. Interstate Route 15 Back Roads (b) Give the value of the test statistic: (c) Test my claim at the 10% significance level.Enter the critical value: There is sufficient evidence to conclude that the population means are not equal.YesNo (d) Does your conclusion change at the 5% significance level?YesNo
Start of Questions The work week for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that employees at start-up companies work more on average then most working adults in the US. She asks 12 engineering friends at start-ups for the lengths in hours of their work week. Their responses are shown in the table below. Test the claim using a 10% level of significance. Give answer to at least 4 decimal places.Note: You will have to copy and paste (or type) this data into Statcrunch and ask it to calcualte the sample mean and standard deviation. Hours 49 50 60 54 49 67 47 50 50 46 52 50 What are the correct hypotheses? H0: Select an answer σ² p s x̄ μ s² σ p̂ ? = ≠ ≥ > < ≤ hours H1: Select an answer s² μ s σ² x̂ p p̂ σ ? ≠ < ≤ > = ≥ hours Based on the hypotheses, find the following: Test Statistic= p-value= The correct decision is to Select an…
If a distribution of data follows a normal distribution, we would expect that the __________, and __________ are all equal.

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That is a sampling distribution of a sample statistic?