ASsume a member is selected at random from the population represented by the graph. Find the probability that the member selected at random is from the shaded area of the graph. Assume the variable x is normally distributed. SAT Critical Reading Scores 200

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Assume a member is selected at random from the population represented by the graph. Find the probability
that the member selected at random is from the shaded area of the graph. Assume the variable x is normally
SAT Critical Reading Scores
distributed.
200 <x<375
H = 510
o = 121
200
375
800
Score
The probability that the member selected at random is from the shaded area of the graph is
(Round to four decimal places as needed.)
Transcribed Image Text:Assume a member is selected at random from the population represented by the graph. Find the probability that the member selected at random is from the shaded area of the graph. Assume the variable x is normally SAT Critical Reading Scores distributed. 200 <x<375 H = 510 o = 121 200 375 800 Score The probability that the member selected at random is from the shaded area of the graph is (Round to four decimal places as needed.)
Use the normal distribution to the right to answer the questions.
Standardized Test Composite
Scores
(a) What percent of the scores are less than 19?
(b) Out of 1500 randomly selected scores, about how many would be expected to be greater than 21?
p=21.3
o=5.5
19 21
Score
(a) The percent of scores that are less than 19 is %.
(Round to two decimal places as needed.)
Transcribed Image Text:Use the normal distribution to the right to answer the questions. Standardized Test Composite Scores (a) What percent of the scores are less than 19? (b) Out of 1500 randomly selected scores, about how many would be expected to be greater than 21? p=21.3 o=5.5 19 21 Score (a) The percent of scores that are less than 19 is %. (Round to two decimal places as needed.)
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