In a video game, Val scored 30%

Mathematics

2 answers:

Vedmedyk [2.9K]3 years ago

8 0

If he scored 30% less points than Peeta 30% of 1060= 318 1060-318=742 hopefully this helps

LenaWriter [7]3 years ago

4 0

Answer:

742

Step-by-step explanation:

30% of 1060 = 318

1060 - 318 = 742

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Nuetrik [128]

The second one is B

7 0

4 years ago

What is the measure of m? 6 3 18 n m = = [?]

torisob [31]

Answer:

6/n = n/18

n^2 = 108

n = sqrt 108

a^2 + b^2 = c^2

36 + 108 = m^2

144 = m^2

m=12

Let me know if this helps!

3 0

3 years ago

A survey of 85 families showed that 36 owned at least one DVD player. Find the 99% confidence interval estimate of the true prop

attashe74 [19]

Answer:

$0.424 - 2.58\sqrt{\frac{0.424(1-0.424)}{85}}=0.286$

$0.424 + 2.58\sqrt{\frac{0.424(1-0.424)}{85}}=0.562$

The 99% confidence interval would be given by (0.286;0.562)

Step-by-step explanation:

Information given:

$X= 36$ represent the families owned at least one DVD player

$n= 85$ represent the total number of families

$\hat p=\frac{36}{85}= 0.424$ represent the estimated proportion of families owned at least one DVD player

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by $\alpha=1-0.99=0.01$ and $\alpha/2 =0.05$ . And the critical value would be given by: