The below graph is a Normal distribution. If the vertical line represents a z-score of 0.75.
What is the proportion of the observations that would occur in the shaded area ?
What percentage of college students work more than 30 hours per week?
If a variable’s distribution is skewed . but we had a large sample size would we be able to standardize the values to use the standard Normal (z) distribution in order to find the proportion of cases above/below/between various points? Why or why not?
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