Children below 30th percentile in the bottom 30 are in need

Reference no: EM13462783

Reading readiness of preschoolers from an impoverished neighborhood (n = 20) was measured using a standardized test. Nationally, the mean on this test for preschoolers is 30.9, with SD = 2.08.

a. Children below the 30th percentile (in the bottom 30%) are in need of special assistance prior to attending school. What raw score marks the cut-off score for these children?

b. What percentage of children score between 25 and 28.5?

c. How many children would we expect to find with scores between 28 and 31.5?

d. Children in the top 25% are considered accelerated readers and qualify for different placement in school. What raw score would mark the cutoff for such placement?

Reference no: EM13462783

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