Do males or females feel more tense or stressed out at work? A survey of employed adults conducted online by acompany on behalf of a research organization revealed the data in the contingency table shown to the right. Completeparts (a) through (d) below.Felt Tense or Stressed Outat WorkGenderYesNoTotal190MaleFemale260450140395535985Total330655a. What is the probability that a randomly selected person's gender is female?(Type an integer or a decimal. Round to three decimal places as needed.)b. What is the probability that a randomly selected pèrson feels tense or stressed out at work and is female?(Type an integer or a decimal. Round to three decimal places as needed.)c. What is the probability that a randomly selected person feels tense or stressed out at work or is female?(Type an integer or a decimal. Round to three decimal places as needed.)d. Explain the difference in the results in (b) and (c).Get more help -View an exampleHelp me solve this45°FP'Type here to seareh144&esc%24

Required probability is P(selected person is female)

Answered: Do males or females feel more tense or…

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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A teacher is currently teaching two statistics classes, one at 8:00 A.M.and the other at 10:00 A.M. The accompanying table summarizes the attendance records by showing the probability of the number of absent students per class. Complete parts a and b. Probability Number of Absent Students 8 A.M. Class 10 A.M. Class 0 0.05 0.15 1 0.19 0.37 2 0.29 0.21 3 0.18 0.15 4 0.21 0.07 5 0.08 a. Calculate the mean number of students absent for each class. Calculate the mean number of students absent from the 8:00 A.M. class. μ= (Type an integer or a decimal. Do not round.) . Calculate the mean number of students absent from the 10:00 A.M. class. μ= (Type an integer or a decimal. Do not round.) b. Calculate the standard deviation for the number of students absent for each class. Calculate the standard deviation for the number of students absent from the 8:00 A.M.class. σ=…
The table shows the distribution, by age and gender, of the 28.5 million people in a certain region who live alone. Use the data in the table to find the probability that a randomly selected person in the region is a woman in the 18-24 age range living alone. Male Female Total Attempted Ages Ages Ages Ages Ages Ages 18-24 25-34 35-44 45-64 65-74 275 Total 0.9 2.3 2.4 0.7 1.5 1.2 1.6 3.8 3.6 4.6 1.4 1.5 4.8 6.3 5.0 2.2 9.6 3.6 BECER 13.1 15.4 28.5 The probability is (Type an integer or decimal rounded to the nearest hundredth as needed.)
A random sample of 10 compact cars, 10 mid-size cars, and 10 luxury cars were selected. The time (in seconds) each of the randomly selected cars required to accelerate from 0 to 60 mph was looked up on the Autos.com website. The results are presented below. Car Type Time (in seconds) Required to Accelerate from 0 to 60 mph Compact 9.3 8.1 10.2 8.8 9.0 9.3 7.7 9.2 9.4 8.6 Mid-Size 6.9 5.7 8.3 7.7 8.6 5.9 6.1 8.8 6.1 7.2 Luxury 5.7 6.3 5.4 4.7 6.2 7.0 5.9 5.3 6.3 5.0 Conduct a hypothesis test using ! = 0.05 to determine whether the mean time required to accelerate from 0 to 60 mph is the same for compact, mid-size, and luxury cars. (No accounting or excel, I need help solving it.)
Foxbees magazine published data on the best small firms in 2012. These publicly traded firms have a stock price of at least $5 per share and have reported annual revenue between $5 million and $1 billion. The data below shows the ages of the corporate CEOS for a random sample of these firms. 49 67 59 48 45 49 39 44 37 38 48 38 43 48 62 74 70 58 58 40 74 35 36 54 38 45 54 55 64 75 69 36 55 72 69 60 40 64 39 59 74 52 40 49 38 38 74 50 55 50 R vector Copy to clipboard a) What is the mean of the sample? (Round to 4 decimal places) b) What is the standard deviation of the sample mean or the standard error? (Round to 4 decimal places) c) What is the sample size? (Round to whole number)
The 2015 National Vital Statistics Report provides information on how the nearly four million live births that occurred in 2014 broke down by birth order. Choose at random a baby born in the United States in 2014. Baby's birth order Probability mean = 1 2 0.391 0.319 The few babies who were 9th or more in birth order are included in the "8" birth order group. In 2014, 39.1% of the nearly 4 million live births in the United States were to first-time mothers. 3 5 6 7 4 0.168 0.072 0.028 0.012 0.005 standard deviation = What are the properties of the sampling distribution of the proportion of births to first-time mothers in random samples of 500 births from 2014? (Enter your answer for the mean rounded to three decimal place and your answer for the standard deviation rounded to four decimal places.) 8 0.005
Answer correctly.
A researcher wanted to study the commuting habits of community college students and faculty. He wanted to compare their mode of transportation to the college. He asked if they walk, bike, or drive to campus. The following table represents the data that was collected. Walks to campus Bikes to campus Drives to campus Total Students 70 22 78 170 Faculty 5 4 23 32 Total 75 26 101 202 A. Find the probability that a randomly selected member of faculty walks to campus. B. If you are randomly selecting a person from those who bike to campus, what is the probability that you will select a student. C. Perform a Test of Independence to determine if commuting habits are dependent on being a student or a faculty.
Is there an association between hair color and body type? The table below shows the results of a researcher's observations of randomly selected people. Frequencies of Hair Colors for Various Body Types Blonde Brunette Red Head 71 80 96 108 55 115 46 91 Short and Slender Short and Pudgy Tall and Slender Tall and Heavy What can be concluded at the o= 0.01 significance level? 53 74 69 63
The table below summarizes a survey involving the relationship between living arrangements and grade point average for a group of students. If a student is selected randomly from this group, what is the probability that the student lives off campus? On Campus At home Apartment Totals Below 2.5 97 38 44 179 2.5 to 3.5 66 26 22 114 Over 3.5 18 5 8 31 Totals 181 69 74 324
The following data lists the ages of a random selection of actresses when they won an award in the category of Best Actress, along with the ages of actors when they won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts (a) and (b) below. Actress (years) 27 31 29 31 34 23 28 37 33 31 D Actor (years) 67 41 36 42 26 35 46 40 37 39 Họ: Ha year(s) H7: Ha v (Type integers or decimals. Do not round.) year(s) Identify the test statistic. t = (Round to two decimal places as needed.) Identify the P-value, P-value = (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? Since the P-value is V the significance level, V the null hypothesis. There sufficient evidence to support the claim that actresses are generally younger when they won the award than actors. b. Construct the confidence interval that could be used for the hypothesis test described in part (a). What feature of the…

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