I believe it is x < 120 (Btw the < is supposed to have a line under but I can’t put one! Pls give brainliest if can)
Answer:
A normal distribution or z-test is used to construct a confidence interval.
Step-by-step explanation:
We are given the following in the question:
Sample mean,
= $3120
Sample size, n = 40
Population standard deviation, σ = $677
The distribution of earnings of college is a normal distribution.
Conditions:
- Since we are given the population standard deviation and the the sample size is also greater than 30.
Conclusion:
Thus, we use a normal distribution or z-test to construct a confidence interval.
Answer:
D :6
Step-by-step explanation:10 is q3 4 is q1subtract and get 6
Answer:
Use the formula
P(X,y) ___y=x__(Reflection)_____P'(y,x)
I think it will help you.