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pashok25 [27]
2 years ago
15

A population has a mean of 200 and a standard deviation of 50. Suppose a simple random sample of size 100 is selected and x is u

sed to estimate . a. What is the probability that the sample mean will be within 65 of the population mean
Mathematics
1 answer:
svlad2 [7]2 years ago
6 0

Answer:

z(195) = (195-200)/50 = -0.1

z(205) = (205-200)/50 = +0.1

P(195 < x < 205) = p(-0.1 < z < 0.1) = 0.0797

Step-by-step explanation:

step by step is in they're

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How many triangles can be constructed with three angles, each measuring 64°?<br><br> 10 POINTS
LUCKY_DIMON [66]

Answer:

<u><em>NONE</em></u>

Step-by-step explanation:

The answer is none. This is because angles in a triangle must add up to 180°, so if you have three angles that are 64° the total would be 192°. I hope this helps!

4 0
3 years ago
What is the length x of the right triangle, rounded to the nearest<br> tenth?
Zarrin [17]

Answer:

109.5; B

Step-by-step explanation:

From your identity,

CosA = adjacent/ hypothenus

A represent an arbitrary angle between the sides in question.

In the question above, A=64

Hypothenus is the longest side and adjacent is the side just below the angle .

In the above case,

Hypothenus= X

adjacent =48

This means;

Cos64 = 48 /X

X = 48 / cos64; [ from cross multiplication and diving through by cos64]

X = 48 /0.4383 [ cos64 in radian = 0.4383]

= 109.51

= 109.5 to the nearest tenth.

Note( do your calculation of angle in radian or else, you won't get the answer)

6 0
2 years ago
3/5 to second power times 25
Anestetic [448]
The answer is 9 because 3/5 to second power is 9/25 then you multiply it by 25 and you get 9
7 0
2 years ago
When 1 is subtracted from three- tenths of the number, the result is equal to one-fifth of a number. What is the number
Bas_tet [7]
Based on the given mathematical statement, it can be rewritten into a mathematical equation to simplify and to be solved easily. The statement, "When one is subtracted from three-tenths of a number" corresponds to the equation, 3x/10 - 1, that is assuming the number is represented by the variable x. This is equal to one-fifth of the number. In other words,
3x/10 - 1 = x/5
x = 10
8 0
2 years ago
Three times the largest of three consecutive even integers is 76 more than the sum of the other two integers what are the intege
DerKrebs [107]
<span>go tot he website of 
</span>
https://www.algebra.com/algebra/homework/Problems-with-consecutive-odd-even-integers/Problems-with-c...

It will help you understand the problem and give you the answer.
7 0
3 years ago
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