Answer:
The answer is below
Step-by-step explanation:
a) For a normal model the sample size has to be equal or greater than 30 so that it can be a normal distribution.
b) Given that:
μ = 11.2 minutes, σ = 4.8 minutes, n = 45
The z score determines how many standard deviations the raw score is above or below the mean. It is given by:
For x < 10 minutes
Therefore from the normal distribution table, P(x < 10) = P(z < -1.68) = 0.0465
Answer:
a+b = b+a
Step-by-step explanation:
I am pretty sure the answer is 1.
Answer:
A = 26.66 ft^2
Step-by-step explanation:
Recall, please, that the formula for the area of a triangle of base b and height h is
A = (1/2)(base)(height).
Here,
A = (1/2)(8.6 ft)(6.2 ft) = 26.66 ft^2, or 26 2/3 ft^2.