Confidence interval for the mean number of kills

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"Domestic cats kill many more wild birds in the United States than scientists thought," states a recent article.1 Researchers used a sample of n=140 households in the US with cats to estimate that 35% of household cats in the US hunt outdoors. A separate study used KittyCams to record all activity of n=55 domestic cats that hunt outdoors. The video footage showed that the mean number of kills per week for these cats was 2.4 with a standard deviation of 1.51. Find a 99% confidence interval for the mean number of kills per week by US household cats that hunt outdoors.

Round your answers to three decimal places.

Reference no: EM132852422

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