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1. A reaction time test has a population mean of 150 milliseconds and a population standard...

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Basic Math

1. A reaction time test has a population mean of 150milliseconds and a population standard deviation of 25millisenconds. Use this information to complete the problemsbelow:

a. What proportion of reaction times is longer than 140milliseconds?

b. What proportion of reaction times is shorter than 130milliseconds?

c. What proportion of reaction times fall between 120 and 145milliseconds?

d. What reaction time represents the 75th percentile?

e. What reaction time represents the 10th percentile?

f. If you were to guess the suit of a card (hearts, diamonds,spades, clubs), what is the propbability of prediciting the suitcorrectly in more than 19 trails out of 52 trials?

Answer & Explanation Solved by verified expert
3.7 Ratings (339 Votes)
a PX 140 PX 140 PZ 140 15025 PZ 04 1 PZ 04 1 03446 06554b PX 130 PX 130 PZ 130 15025 PZ 08    See Answer
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