Answer:
0.2207
Step-by-step explanation:
Here, we want to find the probability that the sample mean is greater than 25.
What we use here is the z-scores statistic
Mathematically;
z-score = (x-mean)/SD/√n
From the question;
x = 65, mean = 63, SD = 13 and n = 25
Plugging these values in the z-score equation, we have
Z-score = (65-63)/13/√25 = 2/13/5 = 0.77
So the probability we want to calculate is ;
P(z > 0.77)
This can be obtained from the standard normal distribution table
Thus;
P(z > 0.77) = 0.22065 which is 0.2207 to 4 d.p
3√10 + 7√15 - 6√10 - 4√15
3√10 - 6√10 + 7√15 - 4√15
-3√10 + 3√15
The answer is B.
Answer:
36
Step-by-step explanation:
You divide the 45 by the number of purple marbles then you multiply that by the number of orange marbles.
Answer:
953.78 in³
Step-by-step explanation:
Area of circle = πr²
The area of the base
= 3.14×(9÷2)²
= 63.585 in²
The capacity of the container
= 63.585×15
= 953.775 in³
