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2 years ago

Find X and Y I need help plz ASAP

Mathematics

1 answer:

Nezavi [6.7K]2 years ago

4 0

Answer:

x=5.657 y=5.657

Step-by-step explanation:

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Let x be the amount of time (in minutes) that a particular San Francisco commuter must wait for a BART train. Suppose that the d

larisa [96]

Answer:

a) $P(X$

$P(X>14) = 1-P(X$

b) $P(7< X$

c) We want to find a value c who satisfy this condition:

$P(x$

And using the cumulative distribution function we have this:

$P(x$

And solving for c we got:

$c = 20*0.9 = 18$

Step-by-step explanation:

For this case we define the random variable X as he amount of time (in minutes) that a particular San Francisco commuter must wait for a BART train, and we know that the distribution for X is given by:

$X \sim Unif (a=0, b =20)$

Part a

We want this probability:

$P(X$

And for this case we can use the cumulative distribution function given by:

$F(x) = \frac{x-a}{b-a} = \frac{x-0}{20-0}= \frac{x}{20}$

And using the cumulative distribution function we got:

$P(X$

For the probability $P(X>14)$ if we use the cumulative distribution function and the complement rule we got:

$P(X>14) = 1-P(X$

Part b

We want this probability:

$P(7< X$

And using the cdf we got:

$P(7< X$

Part c

We want to find a value c who satisfy this condition:

$P(x$

And using the cumulative distribution function we have this:

$P(x$

And solving for c we got:

$c = 20*0.9 = 18$

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2 years ago

42 people attendend t

myrzilka [38]

11 pizzas 8 slices each = 11*8 =88 slices

88/42 = 2.0952

so each person got 2 slices of pizza

42 * 2 =84

88-84 = 4 slices were left over

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Answer:

i think u should check ur equation ion think its correct mane!

Step-by-step explanation:

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The answer to this question is B.

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