Recent research seems to indicate that the mean height of females is now greater than 163 cm. You collect your own random sample of the heights of 40 randomly chosen females. Your sample mean height is 164.6 cm. The standard deviation of the population of females is known from past data to be 5.59 cm. Does your sample provide sufficient evidence that the mean height of females is now greater than 163 cm? Use = 0.05. You are testing H = 163 : > 163. Reject Ho. There is sufficient evidence that the mean height of females is greater than 163 cm. US Retain Ho. There is not sufficient evidence that the mean height of females is greater than 163 cm. Reject Ho. There is not sufficient evidence that the mean height of males is greater than 175 cm. Retain Ho. There is sufficient evidence that the mean height of females is greater than 163 cm.

Recent research seems to indicate that the mean height of females is now greater than 163cm. You collect your own random sample of the heights of 40 randomly chosen females. Your sample mean height is 164.6cm. The standard deviation of the population of females is known from past data to be 5.59cm. Does your sample provide sufficient evidence that the mean height of females is now greater than 163 cm ? Use =0.05. You are testing H0:=163vsH1:>163. Reject H0. There is sufficient evidence that the mean height of females is greater than 163cm. Retain H0. There is not sufficient evidence that the mean height of females is greater than 163cm. Reject H0. There is not sufficient evidence that the mean height of males is greater than 175cm. Retain H0. There is sufficient evidence that the mean height of females is greater than 163cm