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2 years ago

8

A class has 4 boys and 10 girls. What is the ratio in the simplest form that compares a number of boys to a total number of stud

ents?
need the right answer

1 answer:

sergejj [24]2 years ago

6 0

Answer:

4 to 14 should be the right answer

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marysya [2.9K]

60 * 0.10 = 6
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2 years ago

Brown ball weighed 1.6 pounds and the green ball weighed 0.39 pounds if he placed both on the scale at the same time what will t

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3 years ago

What is the measure of ∠B?

DochEvi [55]

M<B = 90 - 38
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2 years ago

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Sveta_85 [38]

Answer:4/125

Step-by-step explanation:

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2 years ago

Suppose you take an SRS of size 1000 of Connecticut students eligible to take the SAT and find that 85% plan to take the SAT dur

nadezda [96]

Answer:

$\mu_{p}=p=0.81$

Step-by-step explanation:

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

So under the null hypothesis the mean for the population proportion is p

$\mu_{p}=p=0.81$

And the standard deviationis given by:

$\sigma_{p}=\sqrt{\frac{p_0(1-p_o)}{n}}=\sqrt{\frac{0.81(1-0.81)}{1000}}=0.0124$

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3 years ago