A quantitative variable that has a finite or countable number of values is called

1 answer:

6 0

A countable quantitative variable that is finite is called a discrete variable while a non finite or infinite quantitative variable is known as a continuous variable. Discrete variables can only be a certain set of numbers while a continuous variable can be any number of values.

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If f(x)= VX-3, which inequality can be used to find the domain of f(x)?

NeX [460]

Answer:

the second one but I'm not sure it cuz it was a little bit different in my text I hope it

4 0

3 years ago

Let x denote the courtship time for a randomly selected female–male pair of mating scorpion flies (time from the beginning of in

gavmur [86]

Complete Question:

a) Is it plausible that X is normally distributed?

b) For a random sample of 50 such pairs, what is the (approximate) probability that the sample mean courtship time is between 100 min and 125 min?

Answer:

a) It is plausible that X is normally distributed

b) probability that the sample mean courtship time is between 100 min and 125 min is 0.5269

Step-by-step explanation:

a)X denotes the courtship time for the scorpion flies which indicates that is a real - valued random variable, and since normal distribution is a continuous probability distribution for a real valued random variable, it is plausible that X is normally distributed.

b) Probability that the sample mean courtship time is between 100 min and 125 min

$\mu = 120\\n = 50$

$P(x_{1} < \bar{X} < x_{2} ) = P(z_{2} < \frac{x_{2}- \mu }{SD} ) - P(z_{1} < \frac{x_{2}- \mu }{SD})$

$SD = \sqrt{\frac{\sigma^{2} }{n} } \\SD = \sqrt{\frac{110^{2} }{50} } \\SD = 15.56$

$P(100 < \bar{X}$

From the probability distribution table:

$P(z_{2} < 0.32 ) = 0.6255\\ P(z_{1} < -1.29) = 0.0986$

$P(100 < \bar{X}$

6 0

3 years ago

James has a board that is 3/4 foot long. He wants to cut the board into pieces that are each 1/8 foot long

mina [271]

Answer=6 pieces

First lets convert 3/4 to ?/8...

$\frac{3}{4}= \frac{6}{8}$

3/4 is equivalent to 6/8.

Now we can divide 6/8 by 1/8

$\frac{6}{8}/ \frac{1}{8}=6$

Answer=6 pieces

4 0

3 years ago

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klemol [59]

The answer is 6e+94

Hope this helps!!!

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3 years ago

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Referring to the figure, what is the slope of the line?

sweet [91]

Answer: