Question

In a bin containing 500 marbles, 160 are red, 220 are blue, and 120 are green.


In a bowl of 25 marbles scooped from this bin, how many would be expected to be blue?

A.
6

B.
8

C.
11

D.
22

Answer 1

C. Because 220/500 = 0.44 is the prob of pulling a single blue one. Then multiply by 25 to get probability.

Answer 2

one more pleaseeee

Answer 3

A radio talk show host asks listeners to call the radio station and give their opinions on a proposed new city ordinance. He uses the opinions of 200 callers to conclude that the voters are overwhelmingly opposed to the ordinance.


Why is this sample likely to be biased?

A.
The survey is voluntary and includes only listeners of this radio program.

B.
There are not enough people in the sample.

C.
Radio listeners are more likely to be opposed to city ordinances.

D.
The entire population of the city was not surveyed

Answer 4

I will ask you this, who would listen to a particular host?

Answer 5

What is your guess for the answer?

Answer 6

i think it c

Answer 7

C would be discluded because it makes an assumption (something that cannot happen). Next guess.

Answer 8

a...?

Answer 9

Why?

Answer 10

i really dont know i just really need to pass this i only need these two

Answer 11

A is correct.

Answer 12

thanks so much(:

Answer 13

To find out whether the citizens of a city are willing to pay higher taxes to make improvements to the city's playgrounds, the city council randomly selects 500 citizens to be surveyed about the issue.


Is this sample of citizens likely to be biased or unbiased?

A.
biased

B.
unbiased

Answer 14

@jsuptic