Question: A scientist conducted a study of how often her pet parakeet chirps. She recorded the number of distinct chirps the parakeet made in a 30-minute

A scientist conducted a study of how often her pet parakeet chirps. She recorded the number of distinct chirps the parakeet made in a 30-minute period, sometimes when the room was silent and sometimes when music was playing. The data are shown in the following table.9 Construct a 95% confidence interval for the mean increase in chirps (per 30 minutes) when music is playing over when music is not playing.

Chirps in 30 minutes With music Without music Ditference Mean 1 9 1 5 1 0 k 2 1 2 1 9 1 8 1 2 0 5 1 8 1 12 41711-3. 2413 20 4 0 2 3 14 5 1 7 5 1 22 4 18 533-3. 2 3 8 Day 2 3 4 5 6 7 10 1 2 3 4 5 6 7 20-22 23 24 25 26 27 28

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