Question

PPIU Mately Hd UISLILULUI WILI a mean of 3.05 and a standard deviation of 0.30. Find the probability that the mean GPA of a random sample of 36 students selected from this university is between 2.85 and 3.20. Round your answer to four decimal places Attach File Browse My Computer Browse Content Collection Browse Dropbox QUESTIONS Let x be a continuous random variable that follows a normal distribution with a mean of 210 and a standard deviation of 28. Find the value of x so that the area under the normal curve to the left of x is approximately 0.767. Round your answer to two decimal places. Attach File Browse My Computer Browse Content Collection Browse Dropbox Click Save and Submit to save and submit. Click Save All Answers to save all ansers 30 MacBook Air $ 4. % 5 8 2 3

Answer 1

Question 8: an Normal (210, 282) 26 Such we have to find value of that area under the normal, curve to the left of X is approx. 0:767 i.e P ( x < x ) = 0.767 P C X-210 28 2-219 ) = 0.767 VI 28 PC2% 2-210 ) = 0.767 .-.ci) using standard by standard normal table PCZ < 0.729) = 0.767 ... cii) comparing ci) & cii) 2-210 0.729 28 da. 210 + 28 (0-729) 230.412 .. 2 = 230.4) Hence the value of x is 2300401 Ans: 230,41