STATS 1222 Quizzes (Chapter 1)
c.) The fifty selected houses.
A real estate agent wishes to estimate the mean number of days on the market of all houses sold in the last two years in Mecklenburg County. To do so, the agent examines the sales data of fifty randomly selected houses sold in that period. Which of the following is the sample in this scenario? a.) All houses sold in Mecklenburg County in the last two years. b.) All houses sold in the last 2 years. c.) The fifty selected houses. d.) All houses sold except the fifty selected houses. e.) All houses in Mecklenburg County.
e.) visitors to the theme park.
A researcher wishes to estimate the average amount spent per person by visitors to a theme park. She takes a random sample of forty visitors and obtains an average of $28 per person. The population of interest is..... a) $28 per person b) theme park researchers c.) the forty selected visitors d.) the amount of money spent per person e.) visitors to the theme park.
a.) All adults in North Carolina.
A researcher wishes to estimate the proportion of all adults in North Carolina who own a cell phone. The researcher takes a random sample of 1572 adults; 1298 of them own a cell phone. The population of interest is a.) All adults in North Carolina. b) All adults in North Carolina who own a cell phone. c.) The 1572 adults sampled. d.) The 1298 sampled adults who have a cell phone. e.) None of the above.
quantitative qualitative quantitative
Identify the following measures as either quantitative or qualitative: The 30 high-temperature readings of the last 30 days The genders of the first 40 newborns in a hospital one year qualitative The age of 20 randomly selected fashion models
qualitative qualitative quantitative
Identify the following measures as either quantitative or qualitative: The eye color of 10 randomly selected CEOs The last two digits of the cell phone numbers of 50 randomly selected students The width of the tails of 100 randomly selected lemurs quantitative
b.) All gas stations in the country.
In order to determine the average price per gallon of regular gasoline, the U.S. Department of Energy conducted a survey of 950 gas stations in the country and found the average price to be $2.77 per gallon in the Thanksgiving weekend last year. The population of interest is: a) All the 950 gas stations from which price data were collected. b.) All gas stations in the country. c.) All gas stations excluding the 950 gas stations from which price data were collected d.) All gas stations where the price per gallon is close to $2.77 per gallon. e.) None of the above.
d.) all college students
The Department of Education wishes to estimate the proportion of all college students who have a job off-campus. It surveyed 1600 randomly selected students; 451 had such jobs. The population of interest to the Department of Education is: a) all 1600 students surveyed b) all college students who have a job off campus c.) The 451 students in the survey who have off-campus jobs d.) all college students e.) none of these answers.
a.) The GPAs of a randomly selected group of students on a college campus. b.) The ages of all US presidents when they took office. e.) The amount of money spent by 35 visitors to a theme park.
Which of the following represent quantitative data? (choose all that apply) a.) The GPAs of a randomly selected group of students on a college campus. b.) The ages of all US presidents when they took office. c.) The blood types of 20 patients with diabetes. d.) The phone numbers of every student in this class. e.) The amount of money spent by 35 visitors to a theme park. f.) The natural hair color of 20 randomly selected fashion models.