N+4=13
-4 -4
n = 9
the sum of a number(n) and 4 that is no larger than 13 is 9
Answer:1 r3
Step-by-step explanation:8 Divided by five
Answer:
0,7
Step-by-step explanation:
Answer:
= to
Step-by-step explanation:
Answer:
b) We are 90% confident that the mean salary of all CEOs in the electronics industry falls in the interval $139,048 to $154,144.
Step-by-step explanation:
Confidence interval:
Confidence level of x%
We build from a sample.
Between a and b.
Intepretation: We are x% sure that the population mean is between a and b.
In this question:
90%
45 CEO's
Between ($139,048, $154,144).
So
We are 90% sure that the mean salary of all CEO's falls within this interval.
The correct answer is:
b) We are 90% confident that the mean salary of all CEOs in the electronics industry falls in the interval $139,048 to $154,144.
