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Mariana [72]
3 years ago
15

The waiting times between a subway departure schedule and the arrival of a passenger are uniformly distributed between and minut

es. Find the probability that a randomly selected passenger has a waiting time minutes.Find the probability that a randomly selected passenger has a waiting time minutes.
Mathematics
1 answer:
Paraphin [41]3 years ago
3 0

Answer:

Incomplete question, but the concepts of the uniform distribution needed to solve this question are given here.

Step-by-step explanation:

Uniform probability distribution:

An uniform distribution has two bounds, a and b.

The probability of finding a value of at lower than x is:

P(X < x) = \frac{x - a}{b - a}

The probability of finding a value between c and d is:

P(c \leq X \leq d) = \frac{d - c}{b - a}

The probability of finding a value above x is:

P(X > x) = \frac{b - x}{b - a}

The waiting times between a subway departure schedule and the arrival of a passenger are uniformly distributed between a and b minutes.

From here, we get the values of a(smallest value) and b(highest value).

Question of the probabilities:

In the two probability questions, you will get the value of x, and will apply one of the three formulas given above, depending on the question, to find the desired probability.

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Maya, Ahmad, and Joe served a total of 75 orders Monday at the school cafeteria. Joe served 2 times as many orders as Maya. Ahma
Basile [38]

Total number of orders served by Maya, Ahmad and Joe on Moday = 75

Let the number of orders Maya served be x.

Then :

Number of orders Joe served = 2x

Number of orders Ahmad served = x - 5

This can be written in an equation as :

\tt \: 2x + x - 5 + x = 75

= \tt 4x - 5 = 75

= \tt 4x = 75 + 5

= \tt 4x  = 80

=  \tt \:  x =  \frac{80}{4}

=  \tt \: x = 20

Which means :

Number of orders Joe served :

= 2 × 20

= 40

Thus, Joe served 40 orders.

Number of orders Maya served = 20

Number of orders Ahmad served :

= 20 - 5

= 15

Thus, Ahmad served 15 orders.

<h2>Therefore, </h2>
  • Maya served 20 orders
  • Ahmad served 15 orders
  • Joe served 40 orders.
5 0
3 years ago
445,473 divided by 316 = ?
Tju [1.3M]

Answer:

1409.724683544

Step-by-step explanation:

You could have just used a calculator lol

3 0
3 years ago
2x + y = -4<br> x + 4y = 12<br> Solve both for y
geniusboy [140]

Answer: y=−6x

Step-by-step explanation: Add -2x to both sides.

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An item costs $420 before tax, and the sales tax is $33.60 . Find the sales tax rate. Write your answer as a percentage.
Marina CMI [18]
Answer: 12.60/420 = 0.03 = <span>3%</span>
3 0
3 years ago
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The College Board originally scaled SAT scores so that the scores for each section were approximately normally distributed with
likoan [24]

Answer:

Percentage of students who scored greater than 700 = 97.72%

Step-by-step explanation:

We are given that the College Board originally scaled SAT scores so that the scores for each section were approximately normally distributed with a mean of 500 and a standard deviation of 100.

Let X = percentage of students who scored greater than 700.

Since, X ~ N(\mu, \sigma^{2})

The z probability is given by;

          Z = \frac{X-\mu}{\sigma} ~ N(0,1)    where, \mu = 500  and  \sigma = 100

So, P(percentage of students who scored greater than 700) = P(X > 700)

   P(X > 700) = P( \frac{X-\mu}{\sigma} < \frac{700-500}{100} ) = P(Z < 2) = 0.97725 or 97.72% Therefore, percentage of students who scored greater than 700 is 97.72%.

8 0
3 years ago
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