Answer:
The mean is usual
Step-by-step explanation:
We have that the mean (m) is equal to 21, the standard deviation (sd) = 1.31 and the sample size (n) = 64
They ask us for P (x <20.5)
For this, the first thing is to calculate z, which is given by the following equation:
z = (x - m) / (sd / (n ^ 1/2))
We have all these values, replacing we have:
z = (20.5 - 21) / (1.31 / (64 ^ 1/2))
z = -3.05
With the normal distribution table (attached), we have that at that value, the probability is:
P (z <-3.05) = 0.0002
The mean is usual because P (x> 20.5) = 1 - P (x <20.5) = 1 - 0.0002 = 0.9998 is a fairly high probability.
Answer: D
Step-by-step explanation: The others dont have A m or an s
Answer:
Step-by-step explanation:
9 1/3 is the same as 28/3 i got that by multiplying 9(3)=27 after that add 1 which equals 28 so that would make 28/3 after this just divide (28/3)/5 (btw the ilttle dash means to divide looks like this ( / ) after that) it gives you 1.86666667 if you have a calculator just hit math enter enter
Answer:
(A)the temperature of 76.1 degrees Fahrenheit converted to degrees Celsius
Step-by-step explanation:
Kareem plans to use the function 
to convert temperature from degrees Fahrenheit to degrees Celsius.
The function gives a result in degrees Celsius. Therefore, 76.1 is in degree Fahrenheit and the result C(76.1) will be in degree Celsius.
Therefore, C(76.1) represents the temperature of 76.1 degrees Fahrenheit converted to degrees Celsius.
The correct option is A.
2(32-3)^3
= 2(29) ^3
=78 ^ 3
= 78 times 78 times 78
= 42,588
