Find a 90% confidence interval for . Recall that
mu hat = x = 1277.0000,

s = 32.3381,

tc = 1.860,
and
n = 9.
In addition, you will need to estimate E, the maximal margin of error which can be approximated as
E = tc
s

n
.
(Round your answers to the nearest whole number.)
lower limit
mu hat − E
=
upper limit
mu hat + E
=
Write the confidence interval you found above in the form: lower limit to upper limit. Include the word "to." Round your numerical values to the nearest whole number.