You may need to use the appropriate appendix table or technology to answer this question.Older people often have a hard time finding work. A research group reported on the number of weeks it takes a worker aged 55plus to find a job. The data on number of weeks spent searching for a job is given in the table below.28 21 58 23 24 21 23 1955 734 24 3931 191759 28 33 2120 31 26 35333317 28 51 4329946 24 2417 26 23 29 12 29(a) Provide a point estimate of the population mean number of weeks it takes a worker aged 55 plus to find a job.29weeks(b) At 95% confidence, what is the margin of error? (Round your answer to three decimal places.)3.166weeks(c) What is the 95% confidence interval estimate of the mean? (Round your answers to two decimal places.)25.83weeks to 32.17x weeks(d) Discuss the degree of skewness found in the sample data. What suggestion would you make for a repeat of this study?One might suggest collectingA histogram of the data shows evidence that the distribution may be skewed to the right.a largersample in the future.

Standard deviation result:Link of the statistical calculator used:…

Answered: You may need to use the appropriate…

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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Johnson Filtration, Inc., provides maintenance service for water-filtration systems throughout southern Florida. Suppose that in addition to information on the number of months since the machine was serviced and whether a mechanical or an electrical repair was necessary, the managers obtained a list showing which repairperson performed the service. The revised data follow. Time bo + b₁ Months + b₂ Type + b3 Person Round your answers to three decimal places. bo b₁ b₂ b3 Repair Time in Hours 2.8 3.0 4.7 1.9 2.9 4.8 4.2 4.9 4.3 4.4 0000 Months Since Last Service 2 6 8 3 a. Develop the estimated regression equation to predict the repair time given the number of months since the last maintenance service, the type of repair, and the repairperson who performed the service. Assume that ₂ = 1 if the type of repair is electrical and 3 = 1 if Dave Newton performed the service. Enter negative value as negative number. 2 7 9 8 4 6 Type of Repair Electrical Mechanical Electrical Mechanical…
Based on your collected data on the survey of assignment 1 fill the following table and then answer the questions below. Age (Years) Male Female Less than 21 years 1 6. Between or equal 21 and 24 years More than 24 years 2
SHORT QUIZ Complete the following table using the data below. Area 50 3.5 1.20 48 36 4.8 3 83 75 1.90 48 -2.00 67 25 1.20 on
Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 5 females and 5 males and measured their MRI image pixel counts and IQ scores. Females Males MRI IQ MRI IG The data is reported to the right. Complete parts (a) through (d) below 139 858,472 140 955,003 935,494 924,059 1.079.550 1,001.121 Click the icon to view the critical values table. 991,305 138 141 857,782 833,868 790,619 133 135 132 141 135 140 AMRI 1,080,000- AIO 145 AIO 145- AMRI 1,080,000 780,000 130 130 780,000 130 780,000 780,000 130 1,080,000 145 1,080,000 MRI 145 MRI (b) Compute the linear correlation coefficient between MRI count and IQ. Are MRI count and IQ linearly related? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round to three decimal places as needed.) A. Yes, MRI count and IQ are linearly related since the linear correlation coefficient is O B. No. MRI count and IQ are not…
Which of the following is a Research Question that can be answered using data? How do people arrive in the Emergency Department? Which hospital gown are patients most comfortable wearing? How many people are obese in a given community? All of the Above
Please give the excel formula or spreadsheet.
A pollster wants to minimize the effect the order of the questions has on a person's response to a survey. How many different surveys are required to cover all possible arrangements if there are 12 questions on the survey? Question content area bottom Part 1 A.39 comma 916 comma 800 39,916,800 B.479 comma 001 comma 600 479,001,600 C.144 144 D.12 12
The female life expectancy and the male life expectancy (in years) for 30 industrial countries were recorded. The data are shown in the back-to-back stemplot below. Female Life Expectancy Male Life Expectancy 68 69 69 70 18 71 72 9 8 73 0 74 9 75 12 5 68 9 76 2 2 7 789 99 77 1 2 4 5 6 7 78 0 4 5 6 7 4 1 79 2 4 2 80 988 7 7 6 6 4 1 81 8 7 5 3 3 2 82 998 32 183 84 5 85 6816 represents 68.6 years Based on the stemplot, which of the following statements is true? (A) The median life expectancy and the range of life expectancies are both less for females than for males in these countries. (B) The median life expectancy and the range of life expectancies are both greater for females than for males in these countries. (C) The median life expectancy is the same for females and males in these countries, and the range of life expectancies is the same for females and for males in these countries. (D) The median life expectancy is less for females than for males in these countries, and the range of…
Please answer the photo attached
3) Estimate the average number of years they stay at their current house for all citizens living in that area.
A psychologist believed that as children get older, they engage in more “inactive activities” such as playing computer games, watching TV and surfing the internet. She collected data from 10 children. She recorded the age of each child and the amount of activity (in hours) the child engaged in per week. Age Activity 7 4.3 9 3.2 10 1 13 1.5 12 1.2 15 0.8 9 3 12 4 15 1.5 14 1.9 Using excel, obtain a scatterplot of the data. Discuss the relationship between age and activity based on the scatterplot. Using excel, obtain the simple linear regression linear regression line predicting activity from age. Interpret the intercept and slope of the regression line. By hand, predict the amount of activity for age = 14. By hand, calculate the residual for age = 14 Using excel output, test the null hypothesis that the slope coefficient is zero using the p-value approach. Write one sentence interpreting the meaning of this result. Make sure to report the test statistic…
A May 2011 Gallup Poll found that many Americans believe in ghosts and other supernatural phenomena. The poll was based on telephone responses from randomly selected adults. The table shows the number of people who expressed belief in various phenomena. Please finish the relative frequency table below, and please show your answers in decimals 2 decimal places. Phenomenon Frequency Relative Frequency Psychic Healing 207 ESP 379 Ghosts 103 Astrology 431 Channeling 603

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