All categories

3 years ago

Use the probability distribution graph to answer the question. P(X≤a)=0.6 What is the value of a?

2 answers:

8 0

Answer: If P(x<a) = 0.6, then the value of a will be 0.25.

In this type of problem, it is safe to assume the normal distribution unless you are told something different.

In this probability, we have to find the z-score for a that gives a probability of 0.6. You will need a normal distribution chart to do this problem. Just find the probability that is closest to 0.6 and use that z-score.

quester [9]3 years ago

7 0

the answer will be 5

You might be interested in

The area of a trapezium shaped field is 480m the distance between two parlel sides is 15m and one of the parrellel side is 20m f

Annette [7]

The other parallel side is 44 m

Step-by-step explanation:

Let us revise the formula of the area of a trapezium

$A=\frac{1}{2}(b_{1}+b_{2})h$ , where

$b_{1}$ and $b_{2}$ are its parallel bases
h is its height (The distance between the two parallel bases)

∵ The area of a trapezium is shaped field is 480 m²

∴ A = 480 m²

∵ The distance between two parallel sides is 15 m

∴ h = 15 m

∵ One of the parallel side is 20 m

∴ $b_{1}$ = 20 m

We need to find $b_{2}$

Substitute all these value in the rule of the area below

∵ $A=\frac{1}{2}(b_{1}+b_{2})h$

∴ $480=\frac{1}{2}(20+b_{2})(15)$

- Multiply the two sides by 2

∴ $960=(20+b_{2})(15)$

- Divide both sides by 15

∴ $64=20+b_{2}$

- Subtract 20 from both sides

∴ $44=b_{2}$

The other parallel side is 44 m

Learn more:

You can learn more about trapezium in brainly.com/question/7287774

#LearnwithBrainly

7 0

3 years ago

HELP

RUDIKE [14]

Answer:

Step-by-step explanation:

a₂ - a₁ = 20 - 4 = 16

a₃ - a₂ = 100 - 16 = 84

Since a₂ - a₁ ≠ a₃ - a₂, the sequence is not arithmetic.

a₂/a₁ = 20/4 = 5

a₃/a₂ = 100/20 = 5

Since a₂/a₁ = a₃/a₂ = 5, the sequence is geometric with a common ratio of 5.

4 0

3 years ago

How do you solve log base 3 (27) by hand

Free_Kalibri [48]

$\bf \textit{Logarithm Cancellation Rules}\\\\
\boxed{log_a a^x= x}\qquad \qquad a^{log_ax}=x\\\\
-------------------------------\\\\
log_3(27)\qquad \boxed{27=3^3}\qquad log_3(3^{\underline{3}})\implies \underline{3}$

8 0

4 years ago

Read 2 more answers

{y=2x+14 {−4x−y=4 What can I substitute for "y" in the equations?

romanna [79]

Since y = 2x + 14 you can substitute (2x + 14) for y in the second equation
-4x - (2x + 14) = 4.

This is an equation with only one variable so you can solve it for x. Then use that answer to find the value for y.

Distribute the subtraction sign throughout the terms in the ()s.
-4x - 2x - 14 = 4
-6x - 14 = 4 This is how I got -6x: -4x - 2x = -6x (combine like terms)
-6x -14 + 14 = 4 + 14 This will eliminate -14
-6x = 18 Now divide both sides by -6
x = -3
y = 2(-3)+14 = 8
Solution to the system is (-3, 8)

ANSWER TO YOU QUESTION: you can substitute (2x + 24) for y

8 0

3 years ago

HELP!!!! 6) Find the value of x. A) 2 B) 4 C) 8 D) 12

Ksivusya [100]

Step-by-step explanation:

the angle at J = ((3x + 19) + 189)/2

so,

122 = (3x + 19 + 189)/2

244 = 3x + 208

36 = 3x

x = 12

so, D is the correct answer.

6 0

2 years ago