Answer:
625
Step-by-step explanation:
basically, half of 500 is 250 halve that you get a quater of 500 (25%)
500+125=625
It would be 2 silly because 3-3=0 and 0 x 6=0 and 0 + 2 = 2 so that is the answer 2
Answer:
Step-by-step explanation:
The confidence interval for population mean is given by :-
Given : Sample size : n= 35 , large sample (n>30)
Mean difference :
Standard deviation :
Significance level :
Critical value :
Now, the 99.9% confidence interval for the mean difference between the marks scored last week and marks scored this week by all the students will be :-
Hence, the 99.9% confidence interval for the mean difference between the marks scored last week and marks scored this week by all the students =
I believe the answer is b