need help with question 10 and 11.

Question Completion Status: AT&T GM Apple W 2016 2017 2018 2019 W Use this information to answer questions 9 through 14. First question (question 9): What are the sa a. AT&T=3 GM - 4 Apple - 5 b. AT&T=2 GM-4 Apple - 7 C. AT&T -2 GM = 4 Apple = 5 d. None of these QUESTION 10 What are the sample variances of the return on the three stocks? a. AT&T sample vaiance- 40.666 GM sample variance - 76.666 Apple sample variance b. AT&T sample var. - 45.333 GM sample var.- 76.666 Apple sample var. - 94.666 C. AT&T samp. var. - 40.666 GM samp. var = 76.666 Apple samp.var - 79.333 d. None of these QUESTION 11 What are the sample standard deviations of the three stocks? AT&T samp. std. dev. - 6.377 G M samp. std. dev. - 8.756 AT&T samp. std dev - 6.377 GM samp. std dev.-3.756 AT&T samp.stodev.-6.733 GM std. dev. - 8.463 Apple samp, sta, dev. - 8.442 Apple samp. std dev. - 8.90 Apple samp. std. dev. 8.723 None of these Click Save and Submit to save and submit. Click Save All Answers to save all answers. QUESTION 12 What is the covariance of returns of AT&T and GM? a. 15.666 b. 22,333 c. 25.967 d. 27.666 e. None of these QUESTION 13 What is the covariance of the returns on GM and Apple? a. - 22.76 b.-50.333 OC. - 54.233 d.-36.784 e none of these QUESTION 14 what are the returns on each portfolio in 2019 a. portfolio1 -2-3) +.8-4) -- 3.8 b. portfolio 1.5(-3) +.5( 4) -- 3.5 C. portfolio1 - (-3-4)/2 - 3.5 d. none of these Click Save and Submit to save and submit. Click Save All Answers to save all answers o Take Test Proble x N O P Daft Mngt 13e PP T QUESTION 15 What is the sample variance of portfolio 1 a. 45.173 b.51.125 OC 57.036 d. 63.471 e. None of these QUESTION 16 What is the sample variance of portfolio 27 O a. 15.774 b. 23.566 OC 29.112 d. 33.769 e. None of these QUESTION 17 and GMs beta is 1.2. How much is the change in GM's stock expected to be per unit change in the market The standard deviation in the return on GM stock is 20 return? 2046 b. 261 .2x 209 1.2 d. noneofthese r to salwall answers Click Save and submit to save and submit Chick Save All A 42 N o Pall Mng:34 PP