#### The distribution of reading scale scores in the 4^\text{th}4 th 4, start superscript, start text, t, h, end text, end superscript grade at Truman Elementary School was approximately normal with mean \mu = 221μ=221mu, equals, 221 and standard deviation \sigma = 36σ=36sigma, equals, 36. Educational researchers are conducting an intervention experiment. To participate in the experiment, a student must have a reading scale score in the lower 50\%50%50, percent of the scores in their grade level.

normal distribution problem
normal calculations in reverse
ap statistics
the distribution of reading scale scores in the 4th grade at Truman Elementary School
reading scale score in the lower 50%

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