statistik
posted by mira .
can you show me the caculation :)
Last year, 50% of MNM, Inc. employees were female. It is believed that there has been a reduction in the percentage of females in the company. This year, in a random sample of 400 employees, 180 were female.
a.Give the null and the alternative hypotheses.
b.At 95% confidence using the critical value approach, determine if there has been a significant reduction in the proportion of females.
c.Show that the pvalue approach results in the same conclusion as that of Part b.

you'er gay just to learn it own your own