An Industrial Organizational (IO) psychologist got some data from a test they did on productivity. The They collected productivity scores (from 1-100 points) from n=5 participants. The scores were: 78, 85, 64, 90 and 88. Find the mean of this group. Suppose the population parameters are µ=75 and o = 12, what is the SEM for this particular group? What is the z score?
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!
An Industrial Organizational (IO) psychologist got some data from a test they did on productivity. The They collected productivity scores (from 1-100 points) from n=5 participants. The scores were: 78, 85, 64, 90 and 88.
- Find the
mean of this group. - Suppose the population parameters are µ=75 and o = 12, what is the SEM for this particular group?
- What is the z score?
- Draw out and shade the curve and determine what the probability of getting this mean is.
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