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Ivahew [28]
3 years ago
12

I really need some help

Mathematics
1 answer:
defon3 years ago
8 0

Answer:

405,376

Step-by-step explanation:

the question is worded weirdly.

Its saying 37,700 copies were sold in one month and then that amount is 9.3% of books sold to date. So, its saying that 37,700 is only 9.3% out of 100%. To get the hundred i devided 37,700 into 9.3 to see how much 1% is. then i multiplied that by 100

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A professor using an open source introductory statistics book predicts that 10% of the students will purchase a hard copy of the
Likurg_2 [28]

Answer: The professor was not accurate with his hypothesis.

Null hypothesis: P1 = 12.5%, P2 = 42.5%, P3 = 45%

The alternate hypothesis: At least one proportion of the student will differ from the others.

Step-by-step explanation: To check if the professors hypothesis were inaccurate.

What percentage of student bought a hard copy of the book.

(25 ÷ 200) × 100 = 12.5%

What percentage of the student printed it from the web.

(85 ÷ 200) × 100 = 42.5%

What percentage of the students read it online.

(90 ÷ 200) × 100 = 45%

This means that the professor was not accurate with his hypothesis. Because the proportion of student in his hypothesis was not the same in the actual.

Therefore; the null hypothesis are

P1 = 12.5%, P2 = 42.5%, P3 = 45%

The alternative hypothesis will state that at least one of the proportion will be different from the others.

5 0
3 years ago
To increase an amount by 3%, what <br> single multiplier would you use?
Yuki888 [10]
The right multiplier is 1.03. Because x*1.03=x*(1+.03)=x+.03x
And .03x is exactly  3% of x.
5 0
3 years ago
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Graph g(x) = -2x - 3
Aleksandr-060686 [28]

Answer:

(-2,-3)

Step-by-step explanation:

6 0
3 years ago
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FIND THE DISTANCE BETWEEN THE TWO POINTS<br> A(0, 0), B(6, 8)
Alex

Answer:

10

Step-by-step explanation:

Mathematical Formula: \sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}

Therefore: \sqrt{\left(6-0\right)^2+\left(8-0\right)^2}

Which = 10

7 0
3 years ago
Find h. <br> plz answer thank you
astra-53 [7]

Answer:

\frac{15}{h}  =  \frac{20}{30}  \\ 15 \times 30 = 20 \times h \\ h  = \frac{450}{20}  \\ h = 22.5

7 0
3 years ago
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