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3 years ago

Convert the following base numbers

Mathematics

1 answer:

topjm [15]3 years ago

5 0

350 because of the concert I’m just kindling I need points

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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

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

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3 years ago

Select all that apply. Which of the following statements best describes a characteristic of an observational study?

LuckyWell [14K]

The individuals are observed the exact way they act in real life. It is the best method to learn about cause and effect relationships. The researcher determines relationships among variables.

I wasn’t sure if I was supposed to pick multiple or just one, so if you need to just pick one, pick “The individuals are observed the exact way they act in real life.”

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3 years ago

Someone pls help me with these worksheets :<

Whitepunk [10]

Answer:

dvdferbhets

Step-by-step explanation:

ewfeagewafdsfdsfsg

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What is the value of x in the figure below? In this diagram, AABD ~ ACAD.<br> 15<br> B<br> х<br> 20

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Answer:

I think 20 is the answer of the question

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3 years ago

Convert the following base numbers​

Convert the following base numbers