Q#1: Explain why studies involving identical twins result in dependent samples of data. ANS: Q#2: The mean life of a particular brand of light bulb is 1200 hours and the standard deviation is 50 hours. It can be concluded that at least 89% of this brand of bulbs will last between ANS- Q#3: Most graduate business schools require applicants to take the GMAT. Scores on this test are approximately normally distributed with a mean of 545 points and a standard deviation of 100 points. What score do you need to be in the top 5% (approximately the scores needed for top schools)? ANS: Q#4- Define t distribution. The tscore (or table value for Student's tdistribution) associated with the upper 5% and 48 degrees of freedom is .PROVIDE THE ANSWER. PLEASE GO TO THE T DISTRIBUTION TABLE AT THE END OF THE TEXT BOOK. ANS