To test

H0:

=60

versus

H1:

<60,

a random sample of size

n=26

is obtained from a population that is known to be normally distributed. Complete parts (a) through (d) below.

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Part 1

(a) If

x=57.9

and

s=14.8,

compute the test statistic.

t0=enter your response here

(Round to three decimal places as needed.)