Use the frequency distribution shown below to construct an expanded frequency distributio. High Temperatures (°F) Class 20-30 31-41 42-52 53-63 64-74 75-85 86-96 O Frequency, f 18 44 66 67 79 66 25 ... Relative frequency Cumulative frequency Class Frequency, f Midpoint 20-30 18 31-41 44 42-52 66 53-63 67 64-74 79 75-85 66

Q: Determine the minimum sample size required when you want to be 95% confident that the sample mean is…

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Q: Construct a 95% confidence interval for σ2

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Q: 0.0 Find the mean and standard deviation for the distribution.

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