Answer:
And the best option for this case would be:
a. (17.5, 21.7)
Step-by-step explanation:
Information given
represent the sample mean
population mean
represent the population deviation
n=42 represent the sample size
Confidence interval
The confidence interval for the mean is given by the following formula:
(1)
The degrees of freedom, given by:
Since the Confidence is 0.98 or 98%, the significance would be
and
, and the critical value would be
Replacing we got:
And the best option for this case would be:
a. (17.5, 21.7)
That’s how you solve complex numbers.
Answer:x=−3
x=−2
Step-by-step explanation:
Answer:
5/6
Step-by-step explanation:
The slope is y change over x change so...
-2-3 over 1-7 which is -5 over -6 which is simplified to 5/6.
Hope this helps :D