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4 years ago

What is non-collinear?

Mathematics

1 answer:

Masja [62]4 years ago

6 0

Answer:

Non-colinear means that three given points do not have a single line connecting all 3 of the points.

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A study sampled 350 upperclassmen (Group 1) and 250 underclassmen (Group 2) at high schools around the city of Portland. The stu

iVinArrow [24]

Answer:

$-0.061 < P_1 -P_2< 0.025$

Step-by-step explanation:

Give data:

$n_1 = 350$

$n_2 =250$

$x_1 = 23$

$x_2 = 21$

$\hat{P} 1 = \frac{x_1}{n_1} = \frac{23}{350} = 0.066$

$\hat{P} 2 = \frac{x_2}{n_2} = \frac{21}{250} = 0.084$

for 95% confidence interval

$\alpha = 1 - 0.95 = 0.05 and \alpha/2 = 0.025$

$z_{\alpha/2} = 1.96$ from standard z- table

confidence interval for P_1 and P_2 is

$\hat{P} 1 - \hat{P} 2 \pm z_{\alpja/2} \sqrt{\frac{\hat{P} 1(1-\hat{P} 1)}{n_1} +\frac{\hat{P} 2(1-\hat{P} 2)}{n_2}}$

$(0.066 - 0.084) \pm 1.96 \sqrt{\frac{0.066(1-0.066)}{350} +\frac{0.084(1-0.084)}{250}}$

$-0.018 \pm 0.043$

confidence interval is

$-0.018 - 0.043 < P_1 -P_2$

$-0.061 < P_1 -P_2< 0.025$

7 0

3 years ago

If our monthly income is $3050 in your house payment is $2400 what fraction of your monthly income must go to pay your house pay

ivolga24 [154]

Answer:

The 28% rule states that you should spend 28% or less of your monthly gross income on your mortgage payment (e.g. principal, interest, taxes and insurance). To determine how much you can afford using this rule, multiply your monthly gross income by 28%

6 0

3 years ago

Steel prices were $4.30 per foot and increased 10%. What is the new price ?

Artist 52 [7]

The new price is 4.73

8 0

3 years ago

Is 12 c greater than less than or equal to 3 qt

zysi [14]

4 cups in a at
12 cups = 3qt
3qt =12 cups
So they are equal

8 0

3 years ago

Read 2 more answers

Melissa bought 40 books. Melissa bought 8 times as many books as Brian. Let b be the number of books that Brian bought

Kay [80]

Answer:

a) 40 = 8b

b) b = 5

Step-by-step explanation:

(b) 40 = 8 × b

40 ÷ 8 = b

5 = b

4 0

3 years ago