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The following data set is arranged in increasing order. 15 z z+6 34 45 68 s - 4 s +7 100 105 1. If the

The following data set is arranged in increasing order.

15 z z+6 34 45 68 s - 4 s +7 100 105

1. If the 15th percentile is 20, find the value of z.

2. If D7 = 85.5, determine D8.

3. If the P20 is 22, determine P30.

4. If the 76th percentile is 80, find the value of s.

5. What is the lowest possible value of the 65th percentile?

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