Ms Lubna Ineirat 129 Example length of AAUJ student have Mean 165cm variance 9

# Ms lubna ineirat 129 example length of aauj student

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Ms. Lubna Ineirat 129
Example: length of AAUJ student have Mean 165cm , variance 9. 1. If we choose a sample of size 36 from AAUJ what is the distribution sample mean? 2. What is the expected of the sample mean? 3. What is the standard deviation of the sample mean? Ms. Lubna Ineirat 130
Example: given a normally distributed population with a mean of 100 and S.D of 20. Find the following probability based on a sample of size 16. 1. P(X>100) 2. P(X=100) 3. P(96<X<108) 4. If n= 64, find P(96<X<108) Ms. Lubna Ineirat 131
Example: the weight of adults in a certain population is normally distribution with mean 70kg and variance 100 𝑘𝑔 2 . 1. Find the probability that a selected person will weight more than 85 kg. 2. 25 person are selected randomly, find probability that exactly one of them has a weight more than 85kg. 3. Find the probability that a random sample of 16 person will have a mean less than 72kg. Ms. Lubna Ineirat 132
Homework : in a study it is found that the mean sodium in take in adult to be 3000 mg with S.D of 1500mg find the probability that a random sample of 400 person will have a mean between 2925 and 3075 mg? Ms. Lubna Ineirat 133

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