Question

A wel des rad and sa o workolace can o o trane g estly to ncreased pr duct vity The o compi yng data on maem naeont At·MAN. m ng was ran onine ede min he sepubion of heslthy maes sge 18-30 Does e tolowing data s.gpist that the populston mean is sgnicance level of 0.10 2 23 27 21 24 2 23 H125k

Answer 1

Sol:

given population mean is equal to 25 kg

null hypothesis denoted by HO:

Alternative hypothesis ,H 1

alpha=0.01

MARK OPTION A

test statistic=z=x-bar-mu/(s/squareroot(n)

=23.57143-25/5.45/squaarert(7)

z =0.694

z alpha/2 at 90%=1.645

z<z critical

Fail to reject null hypothesis

Accept null hypothesis