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3 years ago

Can someone help on this one because i don’t know if i’m correct

Mathematics

1 answer:

34kurt3 years ago

6 0

Answer:

Yes its C

Step-by-step explanation:

First off the y intercepts + 3 and the line hits it not -3 so option D is out

Also the slope is negative so Option A and B are out

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A study was conducted to investigate the relationship between maternal smoking during pregnancy and the presence of congenital m

Pachacha [2.7K]

Answer:

a) In the explanation.

b) P=0.09714

c) P=0.0866

d) p=0.208

Step-by-step explanation:

a) The sampling distribution will have this properties:

1 - The sampling distribution of a proportion is equal to the binomial distribution.

2 - The mean of the sampling distribution will be equal to the proportion of the population (0.328).

$\mu=\pi=0.328$

3 - The standard deviation will be equal to the square root of the product of the proportion and its complementary, divided by the sample size.

$\sigma_s=\sqrt{\pi(1-\pi)/n}=\sqrt{0.328*(1-0.328)/25}=0.094$

B) The fraction with sample proportion of 0.45 or higher is

$z=(p-\pi)/\sigma=(0.45-0.328)/0.094=1.298\\\\P(p\geq0.45)=P(z\geq 1.298)=0.09714$

C) The fraction with sample proportion of 0.20 or lower is

$z=(p-\pi)/\sigma=(0.2-0.328)/0.094=-1.362\\\\P(p\leq0.2)=P(z\geq -1.362)=0.0866$

D) The value of p that cuts off the lower 10% of the distribution corresponds to z=-1.28.

Then we have

$z=(p-\pi)/\sigma\\\\p=\pi+z\sigma=0.328+(-1.28)*0.094=0.328-0.120=0.208$

7 0

3 years ago

$8.50 with 6.5% markup

liraira [26]

Answer:

total would be $9.05

Step-by-step explanation:

$0.55 + $8.50

4 0

3 years ago

I really need help on this

Marina CMI [18]

Step-by-step explanation:

may be able not help help u I'm sure

3 0

3 years ago

Please help and show work please

choli [55]

Answer:

see below

Step-by-step explanation:

a. -11r ≥ 220

Divide both sides by -11 to isolate r.

r ≥ -20

-8 ≤ -7 + (x/10)

Add 7 to both sides.

-1 ≤ x/10

Multiply both sides by 10 to cancel out the denominator of x.

-10 ≤ x

c. -1 - 6(5q - 2) ≥ -139

Distribute the -6 across the parentheses.

-1 - 30q + 12 ≥ -139

Combine like terms on the left side.

-30q + 11 ≥ -139

Subtract 11 from both sides.

-30q ≥ -150

Divide both sides by -30 to isolate q.

q ≥ 5

Hope this helps!

8 0

3 years ago

Read 2 more answers

There is a spinner with 15 equal areas, numbered 1 through 15. If the spinner is spun

d1i1m1o1n [39]

Answer:

7 / 15= 0.47

Step-by-step explanation:

5 0

3 years ago