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)
150/15=10
because 10 times 15 equals 150
3 digit dividend = 150
divisor between 10 and 20 is 15
Answer:
rtshsrst6hteshyrjhryjy
Step-by-step explanation:
fgjyryrjutkj
Answer:
The answer is A because the one on the side is smaller then one one on the side
Step-by-step explanation:
1- 2.5 seconds
2- 1.25 seconds
3- 3.75 seconds
