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What percent of hellbenders are greater than its length

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Reference no: EM132581121

You must draw the normal curve, mark the mean, and shade the appropriate area of the curve. State your calculator command and the answer. Please round to 4 decimal places. Each question is worth 5 points.

1. What percentile is a z-score of 1.78?

2. Suppose the average length of hellbenders is 23.4 inches with a standard deviation of 1.5 inches. Suppose you find a hellbender with length of 25.6 inches. What percent of hellbenders are greater than its length?

3. Again, suppose the average length of hellbenders is 23.4 inches with a standard deviation of 1.5 inches. You find a sample of 100 hellbenders. What is the probability that this group of hellbenders has a sample mean between 23 and 24 inches?

Reference no: EM132581121

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