Answer:
The probability that the sample mean will lie within 2 values of μ is 0.9544.
Step-by-step explanation:
Here
- the sample size is given as 100
- the standard deviation is 10
The probability that the sample mean lies with 2 of the value of μ is given as

Here converting the values in z form gives

Substituting values

From z table

So the probability that the sample mean will lie within 2 values of μ is 0.9544.
The contestants total number of points is 20.
30 + 15 = 45
45 - 25 = 20 total points
Step-by-step explanation:
Firstly convert the diameter into cm
t480812.5cm³hus 3.5×100=350cm
Volume=


=480812.5cm³
Answer:
Step-by-step explanation:
I suspect it is 64 not 65,
9x^2-64y^2
= (3x - 8y)(3x + 8y).
(If it is 65 there are no factors)