need help with the first one

C webassign Apps G Gmail D Youtube D Maps Introduction to Spa. Music and Art of Ch.. 2. [10/20 Points] DETAILS PREVIOUS ANSWERS BBBASICSTAT8ACC 9.1.019. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Let x be a random variable representing dividend yield of bank stocks. We may assume that x has a normal distribution with a = 2.2%. A random sample of 10 bank stocks gave the following yields (in percents) 5.7 4.8 6.0 4.9 4.0 3/4 6.5 7.1 5.3 6.1 The sample mean is x x 5.38%. Suppose that for the entire stock market, the mean dividend yield is at = 4.9%. Do these data indicate that the dividend yield of all bank stocks is high than 4 949 Use a = 0.01. (a) What is the level of s nce? (Enter a number.) two-tailed test