Suppose the population of IQ scores in the town or city where you live is bell-shaped, with a mean of 104 and a standard deviation of 35. Describe the frequency curve for possible sample means that would result from random samples of 100 IQ scores.

The mean of samples of 100 IQ scores taken out from this population will have a distribution with mean M=104 and standard deviation s=3.5.  

Step-by-step explanation:

We know the population mean and standard deviation, that has a bell-shaped distribution:

The sampling distribution, the distribution of the mean of samples of size n out of this population, will have the same mean as the population mean.

The standard deviation will be related to the population standard deviation and the sample size as:

Then, the mean of samples of 100 IQ scores taken out from this population will have a distribution with mean M=104 and standard deviation s=3.5.  

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225