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3 years ago

I really need help through questions 22 of A through E. This is due tomorrow!! [25 POINTS] Please!

Mathematics

1 answer:

klasskru [66]3 years ago

8 0

A. There are 23 students. I counted the amount of X's there were.
B. About 17% of them are only children.
C. About 4%.
D. About 74%.
E. About 9%.

Hope this helps! :)

\(^ ◇^)/

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Zoey earns $20 an hour babysitting plus a $5 flat rate for gas. how many hours must Zoey work to earn at least $125

AleksAgata [21]

Answer:

6 hours

Step-by-step explanation:

20(for babysitting)*6=120

120+5 (for gas)=125

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3 years ago

How is 600:450 and 4:3 equalivent

romanna [79]

Answer:

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3 years ago

What is the exact volume of the cone

Travka [436]

Answer:

V = $\frac{400}{3}$ $\pi$

Step-by-step explanation:

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3 years ago

Yen has 25 dimes she gives the same number of dimes to each of her 5 children how many dimes will each receive?

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Each child will get 5 dimes.
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4 years ago

Let X be the time it takes for a person to choose a birthday gift, where X has an average value of 27 minutes. If the random var

jeka57 [31]

Answer:

The parameters of this exponential distribution is $\lambda$ = $\frac{1}{27}$ .

Step-by-step explanation:

We are given that the random variable X is known to be exponentially distributed and let X be the time it takes for a person to choose a birthday gift, where X has an average value of 27 minutes.

<u><em>So, X = time it takes for a person to choose a birthday gift</em></u>

The probability distribution function of exponential distribution is given by;

$f(x) = \lambda e^{-\lambda x} , x >0$ where, $\lambda$ = parameter of distribution.

Now, the mean of exponential distribution is = $\frac{1}{\lambda}$ which is given to us as average value of 27 minutes that means $\lambda = \frac{1}{27}$ .

So, X ~ Exp( $\lambda = \frac{1}{27}$ ) .

Therefore, the parameter of this exponential distribution is $\lambda$ .

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4 years ago