In a recent year, the scores for the reading portion of a test were normally distributed,...
In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of 21.6
and a standard deviation of 6.2. Complete parts (a) through (d) below.
(a) Find the probability that a randomly selected high school student who took the reading portion of the test has a score that is less than 16
The probability of a student scoring less than 16 is? (Round to four decimal places as needed.)
(b) Find the probability that a randomly selected high school student who took the reading portion of the test has a score that is between 16.7 and 26.5.
The probability of a student scoring between 16.7and 26.5 is? (Round to four decimal places as needed.)
(c) Find the probability that a randomly selected high school student who took the reading portion of the test has a score that is more than 34.4
The probability of a student scoring more than 34.4 is ? (Round to four decimal places as needed.)
(d) Identify any unusual events. Explain your reasoning. Choose the correct answer below.
A.The events in parts (a) and (b) are unusual because its probabilities are less than 0.05.
B. The event in part (c) is unusual because its probability is less than 0.05.
C. None of the events are unusual because all the probabilities are greater than 0.05
D.The event in part (a is unusual because its probability is les than 0.05
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In a recent year, the scores for the reading portion of a test
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In a recent year, the scores for the reading portion of a test were normally distributed,...
In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of 22.6 and a standard deviation of 6.8 Complete parts (a) through (d) below. b. find the probability that a randomly selected high school student who took the reading portion of the test has a score that is between 17.3 and 27.9
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In a recent year, the total scores for a certain standardized test were normally distributed
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