Question

01:02:39 Suppose that a study of elementary school students reports that the mean age at which children begin reading is 5.7 years with a standard devial of 0.7 years. Step 2 of 2: If a sampling distribution is created using samples of the ages at which 55 children begin reading, what would be the standard deviation of the sampling distribution of sample means? Round to two decimal places, if necessary. Tables Keypad Answer 2 Points here to search

Answer 1

let x = Mean age at which children begin - reading and X follous normal distribution with mean M = 5.7 and standard deviation o=07 we have , n=55 we have to find standard deviation of sampling olistribution of sample mean, Standard deviation of sample meanist = 0.0943 standard deviation of sampling distribution of sample mean = 5n = onog