The coefficient of variation of the heights of 20 people selected at random from a given city is found to be 11%. The coefficient of variation of the weights of the selected group of people is found to be 15%. The obtained results show that
Choose one:
the weights are more variable than the heights
the heights and weights have the same degree of variation
the heights and weights are independent
the weights are less variable than the heights
It has been estimated that 30% of all farms are family-owned. In a sample of 12 farms, what is the probability that exactly three farms are family-owned?
Choose one:
0.240
0.001
0.250
0.027