# Question

Suppose the mean IQ for a group of psychopaths is 105 and the standard deviation is 7.

Assuming a normal distribution, determine

a. The percentage of IQ scores between 100 and 110.

b. The probability of selecting a psychopath at random who has an IQ between 100 and 110.

c. The percentage of IQ scores between 90 and 105.

d. The probability of randomly selecting a psychopath who has an IQ between 90 and 105.

e. The percentage of IQ scores that are 125 or above.

f. The probability of randomly selecting a psychopath who has an IQ of 125 or above.

Assuming a normal distribution, determine

a. The percentage of IQ scores between 100 and 110.

b. The probability of selecting a psychopath at random who has an IQ between 100 and 110.

c. The percentage of IQ scores between 90 and 105.

d. The probability of randomly selecting a psychopath who has an IQ between 90 and 105.

e. The percentage of IQ scores that are 125 or above.

f. The probability of randomly selecting a psychopath who has an IQ of 125 or above.

## Answer to relevant Questions

Assume that scores among Asian Americans on an alienation scale are normally distributed with a mean μ = 22 and a standard deviation σ = 2.5 (higher scores reflect greater feelings of alienation). Based on this ...1. In __________ sampling, every member of a population is given an equal chance of being selected for the sample. a. population b. mean c. normal d. random 2. The inevitable difference between the mean of a sample and the ...A medical researcher is interested in the prenatal care received by pregnant women in inner cities. She interviews 35 randomly selected women with children on the streets of Baltimore and finds that the average number of ...A political pollster surveyed a random sample of 500 registered voters, asking whether they intended to vote for candidate A or candidate B. She found that 54% preferred candidate A. Using a 95% confidence interval, ...A researcher is interested in finding out if college-bound high school students tend to smoke cigarettes less than high school students who are not college-bound. He distributes a questionnaire and finds that for a group of ...Post your question

0