Testing Mean with known Variance
sample size	37
population variance	0.234
sample mean	0.649
null hypothesis about mean	0.54
type I error	0.05
Z-value	1.37062746876008
p-value (one-tailed)	0.0852455577773805
p-value (two-tailed)	0.170491115554761
conclusion for one-tailed test
Do not reject the null hypothesis.
conclusion for two-tailed test
Do not reject the null hypothesis