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balandron [24]
3 years ago
6

Hugo is buying DVDs that cost $15 each. He has a coupon for $5 off his

Mathematics
1 answer:
QveST [7]3 years ago
7 0

Answer: 85

Step-by-step explanation: 15 × 6= 90 - 5=  85

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dedylja [7]

Answer:

I dont know

Step-by-step explanation:

yo yo

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3 years ago
Blanking on this one
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skp

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4 0
3 years ago
A sample with a mean of m = 40 and a variance of s2 = 20 has an estimated standard error of 1 point. how many scores are in the
tamaranim1 [39]

The correct option is 20.

The score found for the sample is 20.

<h3>What is Standard error?</h3>

A standard error is a statistic that is applied to test the distribution of data. This metric is comparable to standard deviation. We can calculate the standard error if we know the sample size & standard deviation. It assesses the mean's precision.

Now, according to the question;

Sample mean; \bar{x}=40

Sample variance; s^{2}=20

Thus, s=\sqrt{20}=4.47

Standard error SE = 1

The amount of scores with in sample must be determined here.

The standard error formula is as follows:

S E=\frac{s}{\sqrt{n}}

We might rearrange the formula as follows:

\begin{aligned}\sqrt{n} &=\frac{s}{S E} \\n &=\left(\frac{s}{S E}\right)^{2}\end{aligned}

Substituting the values;

\begin{aligned}&n=\left(\frac{4.47}{1}\right)^{2} \\&n=19.98\end{aligned}

The sample's number of scores n = 19.98 = 20 (round up)

Therefore, the scores are in the sample is 20.

To know more about the Standard error, here

brainly.com/question/14467769

#SPJ4

3 0
2 years ago
What is the approximate perimeter of a rhombus with the diagonals that measure 12 feet and 18 feet
Fynjy0 [20]

Answer:

The perimeter of a rhombus with diagonals of 12 feet and 18 feet would be 60 feet.

Step-by-step explanation:

Perimeter of a rhombus: S1 + S2 + S3 + S4 = answer. (S stands for side.)

12 ft. + 18 ft. + 12 ft. + 18 ft. = 60 ft.

7 0
3 years ago
Suppose 100 people all toss a hat into a box and then proceed to randomly pick out a hat. what is the expected number of people
tatuchka [14]
1 person because there is 1 in 100 chance that you get your hat back
4 0
3 years ago
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