Question

12.19 A random sample of n = 250 has given a mean š = 25 and standard error o; = 4.Com
the 95
per
cent confidence limits of the mean. Comment on the result.
12.20 A random sample of 200 consumer accounts at a shop is selected for the purpose of
nomer The sample mear​

Answer 1

Answer:

sorry for your support of the year old

Answer 2

Answer: So, distance between object and mirror = 0.5 m+ 0.5m = 1m.