Ask question

Ask question

All categories

3 years ago

15

A poll asks shoppers at the mall how many cups of water they typically drink in a day. The results of the poll are listed below.

2 answers:

densk [106]3 years ago

6 0

6
is the first quartile

castortr0y [4]3 years ago

5 0

First you find the median, the middle term (if there are an even number of terms it is the average of the middle two terms.) Since you have 21 terms, odd, you just use the middle term, in this case 8. The first quartile works the same way, but just on the left half between the start and the median...so the first quartile is 6.

You might be interested in

What is that answer

masya89 [10]

Umm it's two obviously

5 0

3 years ago

Suppose the population standard deviation is σ = 5 , an SRS of n = 100 is obtained, and the confidence level is chosen to be 98%

beks73 [17]

Answer:

1.165.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.98}{2} = 0.01$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.01 = 0.99$ , so $z = 2.33$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

In this problem, we have that:

$\sigma = 5, n = 100$ . So

$M = z*\frac{\sigma}{\sqrt{n}}$

$M = 2.33*\frac{5}{\sqrt{100}} = 1.165$

So the correct answer is:

1.165.

6 0

3 years ago

Mrs. Garcia used 5 cups of flour to make 3 loaves of bread. How many loaves of bread can she make with 30 cups of flour?

pochemuha

Well first you would do 5 / 30 which makes 6 then you would 6 times 3 equals 18. So she would make 18 loaves of bread.

3 0

2 years ago

A football is kicked and follows the path of a parabola for 8 seconds until it lands.

soldier1979 [14.2K]

At 4 seconds because 4 is the maximum point in the parabola

7 0

2 years ago

Read 2 more answers

a moving company charges $800 plus $16 per hour. Another moving company charges $720 plus $21 per hour. for a job of how many ho

nirvana33 [79]

800+16x=720+21x
80+16x=21x
80=5x
X=16
So 16 hours :)

3 0

3 years ago