3 years ago

Open this pic and I'll give brainliest answer

Mathematics

1 answer:

Oksanka [162]3 years ago

7 0

Answer:

wait im confused open the picture or answer it?

Step-by-step explanation:

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Evaluate the expression when x = 4. 3x + 2 A. 36 B. 24 C. 18 D. 14

beks73 [17]

Put the value of x = 4 to the expression 3x + 2.

(3)(4) + 2

<em>first multiplication and next addition</em>

= 12 + 2 = 14

<h3>Answer: D. 14</h3>

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3 years ago

In a prior sample of U.S. adults, the Center for Disease Control (CDC), found that 8% of the people in this sample had pinworm b

kow [346]

Answer: a) 453 b) 1537

Step-by-step explanation:

As per given , we have

Margin of error : E= 0.025

Critical value for 95% confidence interval : $z_{\alpha/2}=1.96$

a) The prior estimate of population proportion : p=0.08

Required sample size :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.08(1-0.08)(\dfrac{1.96}{0.025})^2\\\\=452.386816\approx453$

The minimum sample size is 453 U.S. adults.

b) Since the prior estimate of population proportion is not available , so we take p= 0.5

Required sample size :-

$n=0.5(1-0.5)(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.25(\dfrac{1.96}{0.025})^2\\\\=1536.64\approx1537$

The minimum sample size is 1537 U.S. adults.

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4 years ago

What is the probability of selecting two cards from a deck of cards with replacement?

motikmotik

Certin, because they can be any two cards.

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3 years ago

Tom needs $150.00 to buy a stereo. Right now, he has $90.00.

djyliett [7]

Answer:

I think 60.00 is the answer

Step-by-step explanation:

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3 years ago

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Which one of thses is a function cuz IONO!!!

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I think is D but I am not sure

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3 years ago

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Open this pic and I'll give brainliest answer ​

Open this pic and I'll give brainliest answer