SOLUTION: Suppose that IQ scores have a bell-shaped distribution with a mean of 97 and a standard deviation of 12. Using the empirical rule, what percentage of IQ scores are greater than 61

Question 1143418: Suppose that IQ scores have a bell-shaped distribution with a mean of 97 and a standard deviation of 12. Using the empirical rule, what percentage of IQ scores are greater than 61? Please do not round your answe
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
z=(x-mean)/sd or z>(61-97)/12 or z > -3
This would be 99.85% by the empirical rule, which itself rounds to 0.3% at 3 standard deviations (two sided, and this is one-sided, or half).
RELATED QUESTIONS
Suppose that IQ scores have a bell-shaped distribution with a mean of 97 97and a... (answered by rothauserc)

Suppose that IQ scores have a bell-shaped distribution with a mean of 104 and a standard... (answered by ewatrrr)

Suppose that IQ scores have a bell-shaped distribution with a mean of 98 and a standard... (answered by Boreal)

Please help me solve this problem: Suppose thet IQ scores have a bell-shaped distribution (answered by solver91311)

On a particular test, IQ scores for adults follow a bell-shaped (symmetric) distribution... (answered by ewatrrr)

Assuming the IQ scores of a distribution of 6,000 college-aged students is bell-shaped... (answered by ewatrrr)

Hello, I would appreciate it very much to get assistance with a problem: Scores of... (answered by Theo)

assume that adults have IQ scores that are normally distributed with a mean of 105 and a... (answered by ewatrrr)

Hello, I would appreciate it very much to have help with the following question:... (answered by rothauserc)