A normal distribution has a mean of µ=70 with ð=10. If one score is randomly selected from this distribution, what is the probability that the score will be greater than X = 82?
A normal distribution had a mean of µ=70 with ð=12. If one score is randomly selected from this distribution, what is the probability that the score will be less than X=58?
A normal distribution has a µ=100 with ð=20. If one score is randomly selected from this distribution, what is the probability that the score will have a value between X=80 and X=100 ?
A normal distribution has a mean of µ=100 with ð=20. If one score is randomly selected from this distribution, what is the probability that the score will have a value between X=100 and X=130 ?
A normal distribution has a mean of µ=80 with ð= 20. What score separates the highest 15% of the distribution from the rest of the scores?
A normal distribution has a mean of µ=24 with ð=3. What is the minimum score needed to be in the top 14% of the distribution?
John drives to work each morning and the trip takes an average of µ=38 minutes. The distribution of driving times is approximately normal with the standard deviation of ð=5 minutes. For a randomly selected morning, what is the probability that John’s drive to work will take less than 35 minutes?
IQ scores from a normal distribution with µ = 100 and the 15. Individuals with IQs above 140 are classified in the genius category. What proportion of the population consist of geniuses?°°
