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weqwewe [10]
3 years ago
6

Given a normal distribution with a mean of 128 and a standard deviation of 15, what percentage of values is within the interval

83 to 173?
A. 32%
B. 50%
C. 68%
D. 95%
E. 99.7%
Mathematics
1 answer:
tatyana61 [14]3 years ago
6 0

Answer:

E. 99.7%

Step-by-step explanation:

Calculate each z-score.

z = (x − μ) / σ

z = (173 − 128) / 15

z = 3

z = (x − μ) / σ

z = (83 − 128) / 15

z = -3

You can use a z-score table, or use the empirical rule.

P(-3 < z < 3) = 99.7%.

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Please convert the following numbers into SCIENTIFIC NOTATION This is for a pre-algebra assignment so please keep it simple but
Olin [163]

Your best option would be putting them into a scientific notation calculator, but I have done that for you.

1. 57,909,000=5.7909*10^{7}

2. 108,209,000=1.08209*10^{8}

3. 227,940,000=2.2794*10^{8}

4. 149,548,000=1.49548*10^{8}

5. 778,292,000=7.78292*10^{8}

6. 4,504,328,000=4.504328*10^{9}

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8. 2,874,993,000=2.874993*10^{9}

I hope that helps. If you have any further questions on this or any other questions, just ask. I am here to help.

8 0
3 years ago
If u={a,b,c,d}and p={b,d,e}find p(bar at the top)
san4es73 [151]

Answer:

{a , c}

Step-by-step explanation:

first find u intersection p

n(U n P ) = {a , b , c , d} n {b , d , e}

={d , b}

intersection means element or values which lies in both the sets

now to find p complement

note : p( bar at the top ) is read as p complement

p complement = n(U) - n(U n P)

={a , b , c , d} - {d , b}

={a , c}

n(U) -n(U n P) means the elements which is only in n(U ) but not in n(U n P)

4 0
3 years ago
Read 2 more answers
8/x=14/7 what does x equal
Veronika [31]

Answer:

when you have two fractions that equal each other you want to solve by using cross multiply

What cross multiply is, is when you multiply diagonally so:

8/x=14/7

you would take 14*x and 8*7

14x=56 (you would then divide each side by 14)

x=4 (14/14=1, 56/14=4)

8/4=14/7

To check your work you could simplify

8/4=2

14/7=2

2=2, which is true

x=4

Hope this helps ;)

6 0
3 years ago
Find the function h(x) = f(x) ∘ g(x) if f(x) = x(2 - x) and g(x) = 3x.
Harrizon [31]
F(x) = x(2 - x)
g(x) = 3x
Substitute 3x for x in the function f(x)

h(x) = f(x) <span>∘ g(x) = f(g(x)) = 3x(2 - 3x)
</span>

4 0
3 years ago
Please help me with this answer!! I am really stuck...No nonsense answers please.
wariber [46]

Answer:

19

Step-by-step explanation:

Inscribed Angle = 1/2 Intercepted Arc

< DBG = 1/2 ( DG)

< DBG = 1/2 ( 360 - BD - BG)

           = 1/2 ( 360 - 172 - 150)

           = 1/2 (38)

           = 19

8 0
3 years ago
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