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2-Consider the following frequency distribution: SOLVE AND SHOW THE STEPS (PTS: 3) Class Interval Frequency 10-under 20 15 20-under 30 25 30-under 40 10 What

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2-Consider the following frequency distribution: SOLVE AND SHOW THE STEPS (PTS: 3) Class Interval Frequency 10-under 20 15 20-under 30 25 30-under 40 10 What is the relative frequency of the first class? ANS: 3 - The pulse rates for 15 adult women were 95, 66, 76, 106, 84, 76, 81, 56, 68, 54, 74, 62, 78, 74, and 68. a- Calculate the sample mean. (PTS: 2) ANS: b- Calculate the sample variance. (PTS: 4) ANS: c-Calculate the sample standard deviation. (PTS: 2) ANS: 4-Determine the value of the confidence coefficient z(*/2) if 1.

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