Mathematics, 05.12.2019 15:31 nehakarakkattu

Catherine finds that in a randomly selected sample of 500 families in her home town, 45% own at least one computer. her research shows that there are a total of 35,000 families in her town.

which statements are true?

select each correct answer.

a)since her sample was only 500 families, it is not possible that the percentage is a good estimate for the percentage of all 35,000 families that own a computer.
b) if she collected data for a random sample of 1000 families in her home town, then that percentage would be a better estimate for the percentage of all 35,000 families that own a computer.
c)since her sample was randomly selected, she can reasonably infer that about 45% of the 35,000 families in her town own at least one computer.
d)to estimate the percentage well, she would need to collect data for all 35,000 families.

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 18:30, yeet6942000

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Answers: 1

continue

Mathematics, 21.06.2019 22:00, goodperson21

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.

Answers: 2

continue

Mathematics, 21.06.2019 22:10, idc23

To prove that angle def = angle dgf by sas, what additional information is needed? def congruent to dgf dfe congruent to dfg de congruent to dg dg congruent to gf

Answers: 1

continue

Mathematics, 21.06.2019 23:30, ayoismeisalex

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.

Answers: 2

continue

You know the right answer?

Catherine finds that in a randomly selected sample of 500 families in her home town, 45% own at leas...