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3 years ago

Va rog mult sa ma ajutati ,imi trebuie neaparat . plz

Mathematics

1 answer:

Natasha_Volkova [10]3 years ago

5 0

Answer:

amenda. de ce ai nevoie?

Step-by-step explanation:

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3. Uniform A package delivery service breaks up its shipping charges into weight classes, where the package weights are uniforml

Tamiku [17]

Answer:

a) 50% of packages in this class would weigh less than 11 lbs.

b) 25% would weigh more than 11.5 lbs.

c) The average weight for a package in this class is 11 lbs.

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The probability that we find a value X lower than x is given by the following formula.

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

For this problem, we have that:

a. Suppose one of the shipping classes is 10 to 12 lbs. What proportion of packages in this class would weigh less than 11 lbs?

Uniform distribution from 10 lbs to 12 lbs, this means that $a = 10, b = 12$ .

The answer is $P(X \leq 11)$ .

$P(X \leq 11) = \frac{11 - 10}{12-10} = 0.5$

50% of packages in this class would weigh less than 11 lbs.

b. What proportion would weigh more than 11.5 lbs?

Either a package weighs 11.5 lbs or less, or it weighs more than 11.5 lbs. The sum of the probabilities of these events is decimal 1. So:

$P(X \leq 11.5) + P(X > 11.5) = 1$

$P(X > 11.5) = 1 - P(X \leq 11.5)$

$P(X > 11.5) = 1 - \frac{11.5-10}{12-10}$

$P(X > 11.5) = 0.25$

25% would weigh more than 11.5 lbs.

c. What would the average weight for a package in this class be?

The mean M of the uniform distribution is:

$M = \frac{a+b}{2}$

$M = \frac{10+12}{2} = 11$

The average weight for a package in this class is 11 lbs.

5 0

3 years ago

Answer this for me ty

Rzqust [24]

Answer:

number 3.

reason- you can compare urban and rural in 2000 and tell there are more urban people.

7 0

3 years ago

What is the surface area of a prism that has 4in, 4in and 2in sides

GalinKa [24]

The surface area of the prism would be 64 inch^{2}.

6 0

3 years ago

Violet looked through a catalog and found a dress. She wanted to order.she used a calculator to determine that the total cost of

aleksklad [387]

So,

Before I do anything, I would like to ask the question that should subconsciously and instantaneously pop into everyone's heads: Why is Violet calculating mills? Where does she live? Either it is a place where the value of money is very high, or Violet is very poor, so mills factor into prices.

To round $129.207 to the nearest cent (penny), find the mill's place, which is the 7.

Since 7 is greater than or equal to 5, round up.
$129.207 --> $129.21

Violet's dress will cost $129.21 rounded to the nearest cent.

5 0

3 years ago

Options are<br> 2k-13<br> 8k-13<br> 2k+13<br> 2k-7

alukav5142 [94]

Step-by-step explanation:

$- 3(2 + 4k) + 7(2k - 1) \\ \\ = - 6 - 12k + 14k - 7 \\ \\ = 2k - 13$

4 0

3 years ago