The weights for a group of 18-month-old girls are normally distributed with a me
ID: 3059434 • Letter: T
Question
The weights for a group of 18-month-old girls are normally distributed with a mean of 24.7 pounds and a standard deviation of 2.7 pounds. Use the given table to find the percentage of 18-month-old girls who weigh between 18.3 and 23.7 pounds. 2-score Percentile 3.0 0.13 2.0 2.9 0.19 2.8 0.26 1.8 2.7 0.35 2.5 0.62 1.5 6.68 0.5 30.85 0.47 1.6 2.4 0.82 1.4 2.2 1.39 1.2 2.1 1.79 score Percentile Z-score Percentile 1.03.59 15.87 2.87 0.9084.46 18.41 0.85.48 21.19 9.68 1151 0.4 34.46 0.313.57 24.20 27.43 38.21 42.07 46.02 [ 1% of 18-month-old girls weigh between 18.3 and 23.7 pounds. Round the final answer to the nearest hundredth as needed. Round the z-score to the nearest tenth as needed.)Explanation / Answer
The weights for a group of 18-month-old girls are normally distributed with a mean of 24.7 pounds and a standard deviation of 2.7 pounds. Use the given table to find the percentage of 18-month-old girls who weigh between 18.3 and 23.7 pounds. 2-score Percentile 3.0 0.13 2.0 2.9 0.19 2.8 0.26 1.8 2.7 0.35 2.5 0.62 1.5 6.68 0.5 30.85 0.47 1.6 2.4 0.82 1.4 2.2 1.39 1.2 2.1 1.79 score Percentile Z-score Percentile 1.03.59 15.87 2.87 0.9084.46 18.41 0.85.48 21.19 9.68 1151 0.4 34.46 0.313.57 24.20 27.43 38.21 42.07 46.02 [ 1% of 18-month-old girls weigh between 18.3 and 23.7 pounds. Round the final answer to the nearest hundredth as needed. Round the z-score to the nearest tenth as needed.)
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