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geniusboy [140]
2 years ago
7

The mean of a set of credit scores is Mu = 690 and Sigma = 14. Which statement must be true about z694? z694 is within 1 standar

d deviation of the mean. Z694 is between 1 and 2 standard deviations of the mean. Z694 is between 2 and 3 standard deviations of the mean. Z694 is more than 3 standard deviations of the mean.
Mathematics
2 answers:
Kitty [74]2 years ago
5 0

Answer:

I believe it's B

Step-by-step explanation:

hope this helps!

Hatshy [7]2 years ago
5 0

Answer: the correct answer is b!

Step-by-step explanation: hope this helped :)

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If 10% of men are bald, what is the probability that fewer than 100 in a random sample of 818 men are bald? (Answers must be in
Greeley [361]

Answer: the probability that fewer than 100 in a random sample of 818 men are bald is 0.9830

Step-by-step explanation:

Given that;

p = 10% = 0.1

so let q = 1 - p = 1 - 0.1 = 0.9

n = 818

μ = np = 818 × 0.1 = 81.8

α = √(npq) = √( 818 × 0.1 × 0.9 ) = √73.62 = 8.58

Now to find P( x < 100)

we say;

Z = (X-μ / α) = ((100-81.8) / 8.58) = 18.2 / 8.58 = 2.12

P(x<100) = P(z < 2.12)

from z-score table

P(z < 2.12) = 0.9830

Therefore the probability that fewer than 100 in a random sample of 818 men are bald is 0.9830

4 0
3 years ago
Which equation gives the value of the circumference, C, of a circle with a diameter of 56 feet?
Alik [6]

Answer:

C=\pi (56)

Step-by-step explanation:

we know that

The circumference of a circle is equal to

C=\pi D

where

D is the diameter

in this problem we have

D=56\ ft

substitute

C=\pi (56) -----> equation that give the value of the circumference

C=56 \pi\ ft

5 0
3 years ago
Read 2 more answers
aul bought 9 total shirts for a total of $72. Tee shirts cost $10 and long sleeve shirts cost $7. How many of each type of shirt
vodomira [7]

Set up a system of equations:


\text{Total shirts bought}

x + y = 9


\text{Total cost}

10x + 7y = 72


x represents how many tee shirts were bought, and y represents how many long sleeve shirts were bought.


For the first equation, subtract y from both sides to get x by itself:


x = 9 - y


We'll now use substitution. Since x is equal to a value, we can substitute this value for the other equation:


10(9-y) + 7y = 72


Distribute the 10 to both terms in parentheses:


10 \times 9 = 90

10 \times -y = -10y


90 - 10y +7y = 72


Combine like terms:


-10y + 7y = -3y

90 - 3y = 72


Subtract 90 from both sides:


-3y = -18


Divide both sides by -3 to get y by itself:


y = 6


6 long sleeve shirts were bought.


Now you have a value for y. Input this value into the first equation:


x + 6 = 9


Subtract both sides by 6 to get x by itself:


x = 3


3 tee shirts were bought.


The answer is B. 3 tee shirts and 6 long sleeve shirts.

4 0
3 years ago
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Radius and diameter ​
Galina-37 [17]

Answer:

diameter = 13 cm

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Estimate the quotient 9.13 divided by 42
IgorLugansk [536]

Answer:

I would say 2.3 possibly

Plz mark brainliest

Step-by-step explanation:

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