Iq scores are normally distributed with a mean of 105 and a standard deviation of 18 assume that many samples of size n are taken from a large population of people and the mean iq score is computed for each sample a. if the sample size is n=64, find the mean and standard deviation of the distribution of sample means the mean of the distribution of sample mean

Step-by-step explanation:

Given that IQ scores are normally distributed with a mean of 105 and a std deviation of 18.  

By central limit theorem for large sample sizes randomly taken from a large population of people the sample mean x bar follows a normal distribution with mean = sample mean and std error = std dev/sqrt (n-1_

Using this we find mean of distribution of sample mean is 105 .

x^6

step-by-step explanation:

this is correct because:

x-6=0

0*x=0

so

x^6

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation: