Scores on the wechsler adult intelligence scale for the 20-to-34 age group are approximately normally distributed with a mean of 110 and a standard deviation of 25 1.) sketch a picture of the distribution and label the scale 2.) Between what two scores do the middle 95% of all people between the ages of 20 and 34 fall within 3.) How high must a person score to be in the top 15% of all scores
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
Scores on the wechsler adult intelligence scale for the 20-to-34 age group are approximately
1.) sketch a picture of the distribution and label the scale
2.) Between what two scores do the middle 95% of all people between the ages of 20 and 34 fall within
3.) How high must a person score to be in the top 15% of all scores
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
