1) a) Construct a 95% confidence interval for the population mean, u. Assume
the population has a normal distribution. In a random sample of 26
computers, the mean repair cost was $143 with a standard deviation of $35.
b) Suppose you did some research on repair costs for computers and found
that the standard deviation is o = 35. Construct a 95% confidence interval
for the population mean, u.

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d

5 + 8 +7 + 4 + 0 +1 = 25

step-by-step explanation: