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2 years ago

Somebody help!!!! Please

Mathematics

1 answer:

inn [45]2 years ago

3 0

f(x) = (x - 4 )(x - 6) = 0

because you can see when each factor is equal to zero

x - 4 = 0 ⇒ x = 4

x - 6 = 0 ⇒ x = 6

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At Appalachian State University it is known that 52% of undergraduates are female. If a sample of 150 undergraduate students was

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Answer:

a. The sampling distribution will be approximately normal.

d. The mean of the sampling distribution will be close to 52%

g. The standard deviation of the sampling distribution will be 0.0408

Step-by-step explanation:

For this problem the sample size is large enough (n>30), and then the sampling distribution $\hat p$ would be approximately normal. The mean of the sampling distributions is given by $p=0.52$

The expected value for the sampling distribution would be 0.52 since $E(\hat p) = p$

And for the standard deviation we know that is given by:

$Sd= \sqrt{\frac{p (1-p)}{n}}=\sqrt{\frac{0.52(1-0.52)}{150}}=0.0408$

So the correct answers on this case are:

a. The sampling distribution will be approximately normal.

d. The mean of the sampling distribution will be close to 52%

g. The standard deviation of the sampling distribution will be 0.0408

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2 years ago

fred and freda share some prize money in the ratio 7:3. the prize money totaled $3000 how much does fred receive?

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Answer:

fred recives 2700 or 300 im sorry i cant help more

Step-by-step explanation:

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2 years ago

A set of data whose histogram is extremely skewed yields a sample mean and standard deviation of 69.5 and 10.75, respectively. W

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Step-by-step explanation:

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Easy as that

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3 years ago