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1. Since 1930, the FIFA Men's World Cup winners have scored anywhere from 70 up to...

1. Since 1930, the FIFA Men's World Cup winners have scored anywhere from 70 up to 171 goals through the tournament. Suppose that we randomly select three of the previous winners, and the total goals for those winners are 91, 97, and 97. Find the standard deviation, and round to 1 decimal place if needed.

2. A laboratory tested n = 96 chicken eggs and found that the mean amount of cholesterol was x¯ = 85 milligrams with σ = 8 milligrams. Find the margin of error E corresponding to a 95% confidence interval for the true mean cholesterol content, μ, of all such eggs.

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