Answer: B) -56i - 24
This is the same as -24 - 56i
=============================================
Explanation:
The 'i' refers to the imaginary number
In other words,
Squaring both sides gets us
So,
The result is in the form a+bi where a = -24 is the real part and b = -56 is the imaginary part.
Answer:
Step-by-step explanation:
The confidence interval for population mean is given by :-
Given : Sample size : , which is a large sample , so we apply z-test .
Sample mean :
Standard deviation :
Significance level :
Critical value :
Now, a confidence interval at the 95% level of confidence will be :-