The following TI-84 Plus display presents some population parameters. 1-Var-Stats x=146 ?x=2680 ?x²=359,620 Sx=3.92662001 ?x=4 n=20 (a) Assume the population is bell-shaped. Approximately what percentage of the population values are between 142 and 150? Approximately 68% of the population values fall between 142 and 150. (b) Assume the population is bell-shaped. Between what two values will approximately 95% of the population be? Approximately 95% of the population values will fall between and .
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From the given information, we have: Mean (μ) = 146 Standard deviation (σ) = 3.92662001 Now, we can use the empirical rule (also known as the 68-95-99.7 rule) for bell-shaped distributions. This rule states that: - Approximately 68% of the values lie within 1 Show more…
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The following TI-84 Plus display presents some population parameters. 1-Var-Stats x=146 Σx=2680 Σx²=359,620 Sx=3.92662001 σx=4 n=20 (a) Assume the population is bell-shaped. Approximately what percentage of the population values are between 142 and 150? Approximately 68% of the population values fall between 142 and 150. (b) Assume the population is bell-shaped. Between what two values will approximately 95% of the population be? Approximately 95% of the population values will fall between and .
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