A newspaper article reported that people spend a mean of6hours per day watching TV, with a standard deviation of1.9 hours. A psychologist would like to conduct interviews with the5% of the population who spend the most time watching TV. She assumes that the daily time people spend watching TV is normally distributed. At least how many hours of daily TV watching are necessary for a person to be eligible for the interview? Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place.

Suppose that scores on a particular test are normally distributed with a mean of130and a standard deviation of17. What is the minimum score needed to be in the top2% of the scores on the test? Carry your intermediate computations to at least four decimal places, and round your answer to one decimal place.

Suppose that IQ scores in one region are normally distributed with a standard deviation of13

. Suppose also that exactly60% of the individuals from this region have IQ scores of greater than100 (and that 40% do not). What is the mean IQ score for this region? Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.

Below is a graph of a normal distribution with mean=2and standard deviation

=3. The shaded region represents the probability of obtaining a value from this distribution that is less than5.

Suppose that IQ scores in one region are normally distributed with a standard deviation of

13. Suppose also that exactly60%of the individuals from this region have IQ scores of greater than100(and that40%do not). What is the mean IQ score for this region? Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.