Question 20 0.5 out of 0.5 points Review Test Submission: Practice quiz Probability & ... decimal places). A simple random sample of size n, from a Normal population with mean / , has sample mean and sample variance denoted by X and S' respectively. Suppose it is known that X- H -1> 2.048) = 0.05. s/ n Determine the size of the sample. n= Question 21 1 out of 1 points If X17,X26 are lid Normal random variables with mean / and standard deviation 10, find P(1X - H| > 0.98) (Give answers correct to 4 decimal places.) Question 22 1 out of 1 points A simple random sample X1,..., Xn is taken from a Normal population with unknown mean W and variance 4. Find the minimum sample size needed to ensure that P(1X - H|