A test is made ofH

0

:=

20

versusH

1

:

20

.A sample of size=

n

58

isdrawn,and=

x

18

.The population standard deviation is=

8

.

(a) Compute the value of the test statistic

z

.

(b) IsH

0

rejected at the=

0.05

level?

(c) IsH

0

rejected at the=

0.01

level?

Part:0 / 3

0 of 3 Parts Complete

Part 1 of 3

(a) Compute the value of the test statistic. Round the answer to at least two decimalplaces.=

z