Question
1) A z-score is Question options: A the probability under a normal distribution. B the number of standard deviations a measured value is away from
1)
A z-score is
Question options:
A the probability under a normal distribution.
B the number of standard deviations a measured value is away from its mean
C none of the two choices.
2)
A computer's random number generator is set to produce any real number between 30 and 90; those numbers are defined by the variable X. The distribution of the variable X is uniform (uniform distribution). What proportion of times would a number appear between 38 and 45?
Either write your answer as a non-reduced fraction or as adecimal rounded to four decimal places.
Don't enter the answer as a percentage, that is, enter 0.3245 not 32.45%.
3)
Consider the three normal probability (quantile) plots. Which graph indicates that the distribution of the data is possibly normal?
Question options:
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