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2 years ago

The probability distribution for a random variable x is given in the table.

Mathematics

1 answer:

Nat2105 [25]2 years ago

5 0

Answer:

Step-by-step explanation:

The probability that a random variable has a particular value or a range of values is the sum of the probabilities associated with each of the values.

<h3>Application</h3>

All of the x-values in the table are less than or equal to 20, so p(x≤20) is the sum of all of the probabilities in the table.

p(x≤20) = 0.20 +0.15 +0.05 +0.1 +0.25 +0.1 +0.15 = 1.00

The probability is 1 that x ≤ 20.

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Ktoś mi pomoże s tą stroną?

astra-53 [7]

Answer:

Is there an English translation?

5 0

3 years ago

It costs $50.00 to deliver 6 floral arrangements. It costs $80.00 to deliver 12 floral arrangements. What is the constant rate o

german

The constant rate for 1 floral arrangement is $5.00 and inital value is $20.00

Equation: f(z)=20+5z

Step-by-step explanation:

Given,

Delivery cost of 6 floral arrangements = $50.00

Delivery cost of 12 floral arrangements = $80.00

Let,

x be the constant rate for each floral arrangement.

y be the initial value.

According to given statement;

6x+y=50.00 Eqn 1

12x+y=80.00 Eqn 2

Subtracting Eqn 2 from Eqn 1

$(12x+y)-(6x+y)=80.00-50.00\\12x+y-6x-y=30.00\\6x=30.00$

Dividing both sides by 6

$\frac{6x}{6}=\frac{30.00}{6}\\x=5.00$

Putting in Eqn 1;

$6(5.00)+y=50.00\\30.00+y=50.00\\y=50.00-30.00\\y=20.00$

The constant rate for 1 floral arrangement is $5.00 and inital value is $20.00

Equation for the function;

Let z be the number of floral arrangements.

f(z) = initial fee + 5*Number of floral arrangements

f(z) = 20+5z

Keywords: function, subtraction

Learn more about functions at:

#LearnwithBrainly

8 0

4 years ago

Represent the following sentence as an algebraic expression, where "a number" is the letter x. 8 is decreased by a number.

Aloiza [94]

Answer:

Given, a number is x.

The question says 8 is decreased by a number. So which is x.

Decreased by here means subtracting "a number" from the "other number".

According to the question, the algebraic expression will be given by-

8-x

Regards!

7 0

4 years ago

A business owner had sales of $78,000 and expenses of $42,000 last year. The owner took $54,000 out of the business for personal

steposvetlana [31]

Answer:

The answer is 1203

Step-by-step explanation:

4 0

3 years ago

Which property best justifiies why the two expressions below are equivalent? 3(m+5)=3m+15

nadya68 [22]

The answer is the distributive property because it states that if you have a number multiplied by a quantity, you can just multiply that number by each of the terms in the quantity. For example, a(x+y)=ax+ay.

Hope this helps!

4 0

3 years ago