The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to 12). One question asked was “What do you think are the chances you will be married in the next 10 years?” Here is a two-way table of the responses by gender: Opinion Female Male Almost+no+chance 108 116 Some+chance+but+probably+not 131 187 A+50-50+chance 449 510 A+good+chance 754 702 Almost+certain 1168 773 How many individuals are described in this table?___________ How many females were among the respondents?___________ The percent of females among the respondents was about________%

A. If 75% of high school students are able to pass a stats test, find the mean, variance, and standard deviation for the number of students who pass the test in a sample of 150 students. B. What is the probability that just you will not pass this test, if all 22 students take the test?

In an interview for a job, the interviewer says that the average annual income of the company's 16 employees is $73,610. The actual annual incomes of the 16 employees are shown below. Which measure of central tendency would be most informative to the potential employee? OOO O O median O mode O mean Orange $12,500 $12,500 $16,430 $17,305 $17,408 $18,980 $20,432 $24,540 $25,676 $28,906 $28,956 $32,654 $94,024 $98,213 $250,921 $478,320

The General Social Survey is an annual survey given to a random selection of about 1500 adults in the United States. Among the many questions asked are "What is the highest level of education you've completed?" and "If you're employed full-time, how many hours do you spend working at your job during a typical week?" In a recent year, 1079 respondents answered both questions. The summary statistics are given in the chart below. (The sample data consist of the times, in hours per week, that were given by the respondents.) Sample Sample Sample size Groups mean variance Less than h.s. High school Bachelor's 258 40.9 101.8 263 41.8 97.5 270 42.2 94.4 Graduate 288 43.0 98.7 Send data to calculator Send data to Excel To decide if there are any differences in the mean hours per week worked by these different groups, we can perform a one-way, independent-samples ANOVA test. Such a test uses the following statistic. Variation between the samples F= Variation within the samples For the data from…

There is a 75% chance that those who are called will serve on jury duty.  If 12 people are called for jury duty, what is the probabilty that none of the people will serve on the jury?

According to a study conducted by the Gallup organization, the proportion of Americans who are afraid to fly is 0.10.  A random sample of 1100 Americans is taken and they are asked if they are afraid to fly.  Find the probability that the sample portion of Americans in the sample who say they are afraid to fly is greater than 12.   QUESTION REFERS TO DISTRIBUTION OF THE SAMPLING PROPORTION PHAT

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)

February 12, 2009 marked the 200th anniversary of Charles Darwin's birth. To celebrate, Gallup, anational polling organization, surveyed 1,018 Americans about their education level and their beliefsabout the theory of evolution. The survey results are displayed in the provided two-way table.                      High School  Some College    College graduate         Postgraduate       TotalBelieve               80      133                           121                                  63                         397Do Not Believe 103     94                               48                                    9                           254No Opinion     197      98                                59                                   13                           367Total            380      325                                228                                      85                      1,018a. What proportion of respondents have a college degree? Round your answer to three decimal…

Explain in detail RANDOM ASSIGNMENT OF SUBJECTS.

Aleem tossed a coin 50 times and recorded the results in a frequency distribution table. Outcome Frequency Heads 22 Tails 28 What is the experimental probability of tossing a head?