4 years ago

What is the t- critical value for the confidence levek of c=92 and 19 degrees of freedom

Mathematics

1 answer:

Nonamiya [84]4 years ago

8 0

Answer:

-1.85

Step-by-step explanation:

On TI-84

invT((1-0.92)/2), 19)

invT(0.04,19)

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Step-by-step explanation:

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What is the volume of a cereal box that is 2 inches thick, 12 inches high and 10 inches wide?

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Answer:

240

Step-by-step explanation:

12 times 2 is 24

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3 years ago

Read 2 more answers

A study conducted at a certain high school shows that 72% of its graduates enroll at a college. Find the probability that among

mixas84 [53]

Answer:

$P(X \geq 1) =1-P(X$

And we can use the probability mass function and we got:

$P(X=0)=(4C0)(0.72)^0 (1-0.72)^{4-0}=0.00615$

And replacing we got:

$P(X \geq 1) = 1-0.00615 = 0.99385$

Step-by-step explanation:

Let X the random variable of interest "number of graduates who enroll in college", on this case we now that:

$X \sim Binom(n=4, p=0.72)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

We want to find the following probability:

$P(X \geq 1)$

And we can use the complement rule and we got:

$P(X \geq 1) =1-P(X$

And we can use the probability mass function and we got:

$P(X=0)=(4C0)(0.72)^0 (1-0.72)^{4-0}=0.00615$

And replacing we got:

$P(X \geq 1) = 1-0.00615 = 0.99385$

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3 years ago

A bag contains 39 colored marbles. There are six blue marbles, 14 red marbles, eight yellow marbles, and 11 clear marbles. What

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Step-by-step explanation:

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It is called a ray. Which is what you described

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