Letxbe a random variable representing dividend yield of bank stocks. We may assume thatxhas a normal distribution with=2.5%.A random sample of10 bankstocks gave the following yields (in percents).5.74.86.04.94.03.46.57.15.36.1The sample mean is= 5.38%. Suppose that for the entire stock market, the mean dividend yield is=4.4%.Do these data indicate that the dividend yield of all bank stocks is higher than4.4%? Use=0.01.