Question

7 Suppose X~N(4, 22). Using interactive standard normal table shown in class find the following probabilities a) P(-2.5 X 2.5) b) P(X2 5) c) P(X-2.5) d) What are the two values between which 98% of the data fall? 8 Bacteria count: Number of bacteria in a particular culture follows normal distribution with mean 11 million and standard deviation 2 million. In what proportion of that culture less than 6 million bacteria is produced?

Answer 1

ов2 и— 4o 2 S.3 7х7 9.ъ-) d - Р (2:5 - 4 2.5 4- 2. 2 =PC ) 3 25 2 4-O 75 35) - P(2E-о45 ) Р(24 -3. 2 5 O 2266 О00о6 Ф2260 Р Сй5) - 25 4 т- 2 -P (O5 O '69I 5 —р:з085 P ( 2 -2:5- 4 2. Р (2 4-3.2 5 О.000 6

middl 98 y. data I-098)/2 NON Plxs P C --2.326 2 2.326 r2 -05 (Fxd 20.99 2 326 2 ニ4+2X 2'326 batween O'6S michle data lios 98 65
my dear student you posted multiple questions as per HomeworkLib rules I have solved the first one question Thank you.