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AnnZ [28]
2 years ago
9

A true false quiz with 10 questions was given to a statistics class. Following is the probability distribution for the score of

a
randomly chosen student. Find the mean score and interpret the result. Round the answers to two decimal places as needed.

* 5 6 7 8 9 10
P(x) 0.07 0.18 0.36 0.2 0.12 0.07

The mean is ____?
If we were to give this quiz to more and more students, the mean score for these students
would approach _____?

Mathematics
1 answer:
Vladimir79 [104]2 years ago
8 0
Hope this helps you !

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The sum of three numbers is -44.84. One of the numbers is 26.6. The other two numbers are equal to each other. What is the value
docker41 [41]
A+b+c=-44.84

a=26.6
b=c

26.6+b+b=-44.84

2b=-44.84-26.6

b=-35.72


So, a=26.6, b=-35.72, c=-35.72
8 0
3 years ago
How many roots does the equation -2x3 = 0 have? 3 2 1 0
pickupchik [31]
-2x^3 = 0
solving for x you divide both sides by -2
x^3 = 0
Now take the cube root of each side
x = cube root of zero
x = 0
It has 1 root.
The root is zero
4 0
3 years ago
Read 2 more answers
Find A and B if sin2xcos3x = A sin 5x + B sin x
patriot [66]
Recall that

\sin(x+y)=\sin x\cos y+\cos x\sin y
\sin(x-y)=\sin x\cos y-\cos x\sin y

Adding these together, you have

\sin(x+y)+\sin(x-y)=2\sin x\cos y
\dfrac12\sin(x+y)+\dfrac12\sin(x-y)=\sin x\cos y

Replace x with 2x and y with 3x. You end up with

\dfrac12\sin(2x+3x)+\dfrac12\sin(2x-3x)=\sin2x\cos3x
\sin2x\cos3x=\dfrac12\sin5x+\dfrac12\sin(-x)=\dfrac12\sin5x-\dfrac12\sin x

and so A=\dfrac12 and B=-\dfrac12.
7 0
3 years ago
HELP PLSS NEED ANSWER ASAP
pantera1 [17]

Answer: The Answer is d

Step-by-step explanation: if you put the point on the line you will see they line up

7 0
3 years ago
What is the value of s?
stepan [7]

Answer:

<o=180-132=48

so,<s=24(The angle at the circumference is half of its corresponding angle at center)

5 0
3 years ago
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