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4 years ago

Was it the football answer

Mathematics

1 answer:

valkas [14]4 years ago

5 0

Yes i belive it is. your welcome ok

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Plz solve #9 and #10

tiny-mole [99]

9-1 out of 15 tries
10- no

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3 years ago

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julia-pushkina [17]

Answer:

The visiting team took more shots than the home team.

Step-by-step explanation:

6 0

3 years ago

Help me

Nutka1998 [239]

Answer:

Step-by-step explanation:

x + (x + 2) + (x+4) =12

3x + 6 = 12

3x = 6

x = 2

7 0

3 years ago

Question 4 (Multiple Choice Worth 5 points)

IgorC [24]

19.95x + 9.95y <== ur answer

8 0

3 years ago

You are trying to estimate the average amount a family spends on food during a year. In the past the standard deviation of the a

svetoff [14.1K]

Answer:

$n=(\frac{2.58(1000)}{50})^2 =2662.56 \approx 2663$

So the answer for this case would be n=2663 rounded up to the nearest integer

Step-by-step explanation:

We have the following info:

$ME = 50$ margin of error desired

$\sigma = 1000$ the standard deviation for this case

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (a)

And on this case we have that ME =50 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The critical value for 99% of confidence interval now can be founded using the normal distribution. The significance is $\alpha=0.01$ . And for this case would be $z_{\alpha/2}=2.58$ , replacing into formula (b) we got:

$n=(\frac{2.58(1000)}{50})^2 =2662.56 \approx 2663$

So the answer for this case would be n=2663 rounded up to the nearest integer

5 0

3 years ago