Question 7 (1 point) Following are the playback times (in hours) for a sample of

Question

Question 7 (1 point) Following are the playback times (in hours) for a sample of 20 MP3 players. 14, 15, 21, 21, 23, 23, 24, 26, 27, 30, 30, 31, 32, 49, 61, 62, 63, 63, 64, 69 What is the 65th percentile? Write only a number as your answer. You may need to round to one decimal place Your Answer: Answer Save Question 8 (1 point) Following is a sample of the number af wards spoken in each inauguration adressfor u.s presndents ing is a sample of the number of words spoken in each inauguration address for U.S. presidents. 1125, 2976, 1172, 1507, 4776, 3801, 201s, 2463, 4338, 135, 3967, 1,541, 1437, 3217, 1340, 2308,1551. 254s, 2158, 2170, 5433, 1729, 698 What is the 32nd percentile? Write only a number as your answer. Your Answer:

Explanation / Answer

Q7) Here the data is already arranged in ascending order, so we do not have to rearrange the data. The no of data is 20. The 65th percentile = 0.65 * 20 = 13th value. Since 13 is a whole number the 65th percentile will be the average of the 13th and 14th value = (32+49)/2 = 81/2 = 40.5

Q8) Here the data is not arranged in ascending order. Rearranging the same, we get:

135, 698, 1125, 1172, 1340, 1437, 1507, 1541, 1681, 1729, 2015, 2158, 2170, 2308, 2463, 2546, 2978, 3217, 3801, 3967, 4388, 4776, 5433

There are 23 observations.

The 32nd percentile = 0.32 * 23 = 7.36.Since this is a decimal value, the 32nd percentile will be the                     8th number = 1541

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