Homework Housework Outside Employment Recreation OtherTotalMale2915202396Female181726394104Total4732466213200 A random sample of college students were asked to respond to a survey about how they spendtheir free time on weekends. One of the questions, summarized in the contingency table givenabove, asked each respondent to choose the one activity that they most likely participated in on aSaturday morning. The activity choices were homework, housework, outside employment,recreation, or other.If one student is randomly chosen from the group, What is the probability that the student isfemale?0.230.520.480.31O O

Obtain the probability that the student is female. The probability that the student is female is…

Answered: A random sample of college students…

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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Dana Hills High School was considering going back to campus rather than remote instruction for the remainder of the semester. To make this decision, the school sent out a survey to students, parents, teachers, and staff to see if they would prefer remote or on campus instruction. The results of the survey are given in the table below. Find the probability that a person has no preference or is a student. Student Parent Teacher Staff TOTAL Remote 54 78 59 36 227 On-Campus 79 82 37 55 253 No Preference 23 12 11 54 ТОTAL 156 172 104 102 534 0.406 O 0.393 O 0.350 0.327 0.311
Organ Donors USA Today provided information about a survey of 5100 adult Internet users. Of the respondents, 2346 said they are willing to donate organs after death. In this survey conducted for Donate Life America, 100 adults were surveyed in each state and the District of Columbia, and results were weighted to account for the different state population sizes. a. What percentage of respondents said that they are willing to donate organs after death? b. Based on the poll results, what is the probability of randomly selecting an adult who is willing to donate organs after death? c. What term is used to describe the sampling method of randomly selecting 100 adults from each state and the District of Columbia?
A restaurant randomly chooses what to include on its pizza of the day. The meat choices are pepperoni or sausage. The vegetable options are mushrooms, onions, or peppers. The crust options are sesame seed or garlic. Using a tree diagram, determine the probability of a pizza of the day including pepperoni, onions, and garlic crust on a given day? Express your answer as a percentage.
Mindy is a baker, she wants to make a special treat for Valentine's day for her customers but needs help choosing which one. She simulates 120 customers choosing from among 5 different treats. Her simulation results are in the table below. Based on data from the simulation, what is the probability that the treat chosen by a random customer will be a strudel?
Suppose 33.3% of high school students eat pizza and 42% drink soda. If 17.3% of high school students eat pizza and drink soda, what is the probability that a randomly chosen high student will either eat pizza, drink soda, or both?
The table lists the drinking habits of a group of college students. If a student is chosen at random, find the probability of getting someone who is women or a heavy drinker. Sex Non-Drinker Regular drinker Heavy Drinker Total Man 135 55 5 195 Woman 187 21 7 215 Total 322 76 12 410 Group of answer choices 0.932 0.151 0.537 0.815
Are birthdays "evenly distributed" throughout the year, or are they more common during some parts of the year than others? Owners of a children's toy store chain in the Northwest asked just this question. Some data collected by the chain are summarized in the table below. The data were obtained from a random sample of 190 people. The birthdate of each person was recorded, and each of these dates was placed into one of four categories: winter (December 21-March 20), spring (March 21-June 20), summer (June 21-September 20), and fall (September 21-December 20). The numbers in the first row of the table are the frequencies observed in the sample for these season categories. The numbers in the second row are the expected frequencies under the assumption that birthdays are equally likely during each season of the year. The bottom row of numbers gives the following value for each of the season categories. Answer the following to summarize the test of the hypothesis that birthdays are equally…
The World Bank collects information on the life expectancy of a person in each country ("Life expectancy at," 2013) and the fertility rate per woman in the country ("Fertility rate," 2013). The data for 12 randomly selected countries for the year 2011 are shown in the table below. Table: Data of Fertility Rates versus Life Expectancy Fertility Rate Life Expectancy 1.7 77 5.8 55 2.2 70 2.1 76 1.8 75 2.0 78 2.6 73 1.5 81 6.9 54 2.9 72 4.7 63 6.8 57 The most commonly used type of correlation is Pearson correlation, named after Karl Pearson, introduced around the turn of the 20th century. Pearson's r measures the linear relationship between two variables, say X and Y. Find the Pearson’s correlation coefficient for the above data In reference to the calculated correlation coefficient above, describe the strength of the correlation. Briefly give an explanation to meaning of the above results. Obtain the…
According to the U.S. Census Bureau, 74.4% of U.S. households had Internet access in 2013. What is the probability that four randomly selected U.S. households all had Internet access in 2013? Which one of these answer choices is correct? 25.6% 99.6% 74.4% 30.6%
Each year, researchers at the U.S. Bureau of Labor Statistics (BLS) administer the American Time Use Survey (ATUS). Researchers estimate the average amount of time Americans spend on daily activities, such as working, housework, and leisure activities. In particular, one activity that is of interest is the average amount of time Americans spend watching television each day.A researcher complied a random sample of 16 Americans and asked each person how much time they spent watching television each day. The results are given below. 1.9 2.3 3.9 4.4 3.2 1.5 1.2 4.4 0.9 4 0.6 3.9 4.5 1.9 1.8 3.7 Determine the point estimate, x¯ and the sample standard deviation, s. Round the solutions to four decimal places, if necessary.x¯=s=Using a 95% confidence level, determine the margin of error, EE, and a confidence interval for the average time Americans spend watching television each day. Report the confidence interval using interval notation. Round solutions to two decimal places, if…
A sample of 4 different calculators is randomly selected from a group containing 20 that are defective and 10 that have no defects. What is the probability that all four of the calculators selected are defective? Give your answer as a percent rounded to the nearest tenth of a percent.

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