Demographic study was conducted to verify the age distribution among residents in suburban areas. Therewere k 6 age groups selected for this study. The observed frequencies and theoretical proportions underthe null hypothesis are shown in the table below.Age GroupUnder 20 [20, 30) [30, 40) [40, 50) [50, 65) 65 and Above TotalFrequency1321482246218846800Proportions0.150.200.250.100.250.051.00EXPECTED1. Determine all counts expected under the null hypothesis and place them into the table above2. Evaluate the test statisticSolution

Given information: Age Group under 20 [20, 30) [30, 40) [40, 50) [50, 650 65 and Above Total…

Answered: Demographic study was conducted to…

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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2. The following data set belongs to a sample: 1418 -1088 -16 Calculate the mean, median, and mode
. Myers-Briggs: Actors Isabel Briggs Myers was a pioneer in the study of personality types. The following information is taken from MBTI Manual: A Guide to the Development and Use of the Myers-Briggs Type Indicator by Myers and McCaulley (Consulting Psychologists Press). In a random sample of 62 professional actors, it was found that 39 were extroverts. Let p represent the proportion of all actors who are extroverts. Find a point estimate for p. Find a 95% confidence interval for p. Give a brief interpretation of the meaning of the confidence interval you have found. Check Requirements Do you think the conditions np > 5 and nq > 5 are satisfied in this problem? Explain why this would be an important consideration.
You are given the following data of an engineering experiment: a) Construct a frequency Table in which the data is arranged in an ascending order. b) Calculate : 1. The mean. 2. The median. 3. The mode. The range. (2 decimal places) 302.2 407.5 409.3 413.0 412.5 603.5 601.3 508.8 302.1 302.1 505.1 505.1 604.6 413.2 302.2 302.1 405.6 405.6 303.2 401.2 402.3 603.6 601.3 603.6 506.7 302.1 408.4 410.6 302.2 603.4 604.6 604.6 505.1 302.1 406.7 411.7 801.0 604.6 603.6 509.7 303.2 601.3 303.2 505.1 601.3 702.2 801.0 413.3
The following data represents the age of 30 lottery winners. 21 30 31 32 35 35 36 37 37 40 40 43 43 45 46 46 47 49 60 61 64 66 67 67 67 68 71 72 76 80 Complete the frequency distribution for the data. Bin Frequency [20,30) [30,40) [40,50) [50,60) [60,70) [70,80) [80,90)
The following data represents the age of 30 lottery winners. 26 28 28 30 30 32 33 35 24 37 37 41 43 48 56 58 62 63 64 64 66 68 71 72 72 73 73 76 78 84 Complete the frequency distribution for the data. Bin Frequency [20,30) [30,40) [40,50) [50,60) [60,70) [70,80) [80,90)
Given the following list of data, what is the five-number summary?110, 111, 140, 190, 199, 204, 238, 270, 279, 310, 320 Select the correct answer below: Min Q1 Median Q3 Max 100 140 204 279 350 Min Q1 Median Q3 Max 110 111 204 279 300 Min Q1 Median Q3 Max 110 140 204 279 320
12. The age of random sample of 40 people who attended a show at the fox. Theater are given below. Find the first, second, and third Quartile 20 26 31 34 39 45 50 62 20 29 31 35 40 47 51 63 23 30 32 35 40 49 51 66 23 30 33 37 40 49 54 69 26 30 34 38 42 49 57 72
2. A coach gave her team a test on sit-ups completed in one minute. Using the data collected, the coach constructed the following frequency distribution: Scores 90-99 80-89 70-79 60-69 50-59 40-49 30-39 20-29 10-19 0-9 a. 9 12 17 13 10 7 3 1 What is the percentile score for a raw score of 38? Show your work. b.) The coach wants to take the top 20% of the team and train them for the World Sit-up Championships. What raw score cut-off would be used to choose the team? Show your work. Note: you can't have part of a person on the team.
Consider the sample of 65 customer satisfaction ratings given in the table (below). 39 46 42 40 45 44 44 44 45 45 44 46 46 46 41 46 46 38 40 40 41 43 38 48 39 42 39 47 43 47 43 44 41 42 40 44 39 43 36 41 44 41 42 43 43 41 44 45 42 38 45 45 46 40 44 44 47 42 44 45 45 43 45 44 43 Click here for the Excel Data File Carry out a chi-square goodness-of-fit test of normality for the population of all customer satisfaction ratings using α = .05. Recall that we previously calculated x⎯⎯x¯ = 42.95 and s = 2.6424 for the 65 ratings. Use the Empirical Rule to create the intervals. (Round your expected frequencies to 2 decimal places. Round your answer to 3 decimal places.)
Section 3.1, question 15

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