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KatRina [158]
3 years ago
15

A normal distribution has a mean of 75 and a standard deviation of 10 use the standard normal table to find the probability that

a randomly selected X value from the distribution is less than or equal to 50
A. -2.5
B. 0.0062
C. 0.9938
D. 2.5
Mathematics
1 answer:
-BARSIC- [3]3 years ago
7 0

Answer:

0.006

Step-by-step explanation:

We are actually looking for the area under the standard normal curve to the left of 50.  The proper distribution function on my old TI calculator is normalcdf(:

normalcdf(-1000,50,75, 10),

which returns 0.006   (Answer B)

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Which of these is a mathematical expression?
Ainat [17]

Answer:

4 - 3r

Step-by-step explanation:

D is just a statement of words, completely unrelated to math. C is an equation since because of the product and equal sign. hope that makes sense.

8 0
2 years ago
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Can someone explain? Please help! 15 pts!!!!
anygoal [31]
Let 
x--------------> the third stone measure

we know that
the recommended height for the bench is ------> 20 in
20=[4 3/8]+[4 1/2]+[5 1/4]+[x]
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4 1/2---------> (4*2+1)/2=9/2
5 1/4---------> (5*4+1)/4=21/4

20=[35/8]+[9/2]+[21/4]+[x]

<span>x=20-(35/8)-(9/2)-(21/4)</span>

x=20-(35+4*9+2*21)/8-----> 20-113/8------- > (8*20-113)/8

x=47/8---------- > 5.875=5 7/8

<span>
<span>the answer is 5 7/8 in</span></span>



3 0
3 years ago
What is the solution to the system of equations below
nekit [7.7K]

Answer:

There is no solution.

6 0
2 years ago
Miley is trying to solve the following riddle the sum of three consecutive integers is 84 what are the integers
oee [108]

Answer:

Three consecutive numbers are 27,28,29

Step-by-step explanation:

Given :  The sum of three consecutive integers is 84.

To find : What are the integers?

Solution : Let three consecutive numbers x, x+1, x+2

So, according to given situation 'sum of three consecutive integers is 84'.

x+x+1+x+2=84

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So,x=27

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4 0
3 years ago
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Leno4ka [110]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
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