Part 1 of 3 Points: 0 of 1 Save The height of women ages 20-29 is normally distributed, with a mean of 63.9 inches. Assume \( \sigma=2.7 \) inches. Are you more likely to randomly select 1 woman with a height less than 65.4 inches or are you more likely to select a sample of 18 women with a mean height less than 65.4 inches? Explain. Click the icon to view page 1 of the standard normal table. Click the icon to view page 2 of the standard normal table. What is the probability of randomly selecting 1 woman with a height less than 65.4 inches? \( \square \) (Round to four decimal places as needed.)
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Beyond the Answer
To find the probability of randomly selecting 1 woman with a height less than 65.4 inches from a normally distributed population, we can use the z-score formula: \[ z = \frac{(X - \mu)}{\sigma} \] Where: - \( X = 65.4 \) inches (the height we are interested in) - \( \mu = 63.9 \) inches (the mean height) - \( \sigma = 2.7 \) inches (the standard deviation) First, we calculate the z-score: \[ z = \frac{(65.4 - 63.9)}{2.7} = \frac{1.5}{2.7} \approx 0.5556 \] Next, we consult the standard normal table to find the probability associated with a z-score of approximately 0.56. Referring to the table or using a calculator, we find: \[ P(Z < 0.56) \approx 0.7119 \] Thus, the probability of randomly selecting 1 woman with a height less than 65.4 inches is: **0.7119** (rounded to four decimal places).
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