Identify and explain the error

1 answer:

3 0

You would add 10 to 50 then divide both sides of the equation by -10 and you would get x=4 as your final answer. I recommend using the app Photomath:)

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Simplify <br> (2x - 5)(x + 3) = 0

kirza4 [7]

Answer:

x = 5/2, -3

x = 2.5, -3

2 1/2, -3

Step-by-step explanation:

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The number line shows two points with coordinates negative 15 and positive 2.

lapo4ka [179]

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Data collected at Toronto Pearson International Airport suggests that an exponential distribution with mean value 2725hours is a

Ivan

Answer:

a) What is the probability that the duration of a particular rainfall event at this location is at least 2 hours?

We want this probability"

$P(X >2) = 1-P(X\leq 2) = 1-(1- e^{-0.367 *2})=e^{-0.367 *2}= 0.48$

At most 3 hours?

$P(X \leq 3) = F(3) = 1-e^{-0.367*3}= 1-0.333 =0.667$

b) What is the probability that rainfall duration exceeds the mean value by more than 2 standard deviations?

$P(X > 2.725 + 2*5.540) = P(X>13.62) = 1-P(X$

What is the probability that it is less than the mean value by more than one standard deviation?

$P(X$

Step-by-step explanation:

Previous concepts

The exponential distribution is "the probability distribution of the time between events in a Poisson process (a process in which events occur continuously and independently at a constant average rate). It is a particular case of the gamma distribution". The probability density function is given by:

$P(X=x)=\lambda e^{-\lambda x}$