Forty-three percent of Americans use social media and other websites to voice their opinions about
television programs (the Huffington Post, November 23, 2011). Below are the results of a survey of
1364 individuals who were asked if they use social media and other websites to voice their opinions
about Television programs

Uses Social Media and Other Websites to
Voice Opinions About Television Programs
Doesn’t Use Social Media and
Other Websites to Voice
Opinions About Television
Programs
Female 395 291
Male 323 355
a. Show a joint probability table. (2 marks)
b. What is the probability a respondent is female? (2 marks)
c. What is the conditional probability a respondent uses social media and other websites to voice
opinions about television programs given the respondent is female? (3 marks)
d. Let F denote the event that the respondent is female and A denote the event that the
respondent uses social media and other websites to voice opinions about television programs.
Are events F and A independent

It appears that people who are mildly obese are less active than leaner people. one study looked at the average number of minutes per day that people spend standing or walking. among mildly obese people, the mean number of minutes of daily activity (standing or walking) is approximately normally distributed with mean 376 minutes and standard deviation 64 minutes. the mean number of minutes of daily activity for lean people is approximately normally distributed with mean 528 minutes and standard deviation 107 minutes. a researcher records the minutes of activity for an srs of 7 mildly obese people and an srs of 7 lean people. use z-scores rounded to two decimal places to answer the following: what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 mildly obese people exceeds 420 minutes? what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 lean people exceeds 420 minutes?

Zack and tia played chess for 50 min they put the chessboard away at 11: 20 when did they start

Factor 15x^3 - 5x^2 +6x-2 by grouping. what is the resulting expression