2 years ago

19.

Mathematics

1 answer:

timurjin [86]2 years ago

4 0

383882818199102039992919(

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An investment website can tell what devices are used to access the site. The site managers wonder whether they should enhance th

hram777 [196]

Answer:

The shape of the sampling distribution for the sample proportion is going to be normal with mean $\mu = 0.42$ and $\sigma = \sqrt{\frac{0.42*0.58}{300}} = 0.0285$ .

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , a large sample size can be approximated to a normal distribution with mean $\mu$ and standard deviation $\frac{\sigma}{\sqrt{n}}$

So the shape of the sampling distribution for the sample proportion is going to be normal with mean $\mu = 0.42$ and $\sigma = \sqrt{\frac{0.42*0.58}{300}} = 0.0285$ .

3 0

3 years ago

A cup of cereal has 12 grams of fiber, which is 40%40% of the recommended daily allowance. What is the recommended daily amount?

Nesterboy [21]

12g = 40% = 4/10
12 divide by 4 = 3
3 x 10 = 30
Ans = 30grams

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4 years ago

Factor. 49x2−36y2 Enter your answer in the boxes. ( )( )

dusya [7]

Answer:

(7x - 6y )(7x + 6y)

Step-by-step explanation:

Difference of two square

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3 years ago

Proportions in triangles <br> solve for x

NARA [144]

Answer:

Step-by-step explanation:

x/15=6/12

x=15(6)/12

x=7.5

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3 years ago

It cost $44.88 to buy 12 gallons of gas.What was the cost per gallon of gas?

Natali [406]

Answer:

$3.74 per gallon

Step-by-step explanation:

1. Divide $44.88 by 12

2. The answer will be 3.74

3. Each gallon will cost $3.74

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4 years ago