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Unformatted text preview: I did this already for my own sample and found a mean of 2.2 cm with a standard deviation of 0.079 cm and a standard error of 0.025 cm. Use the confidence interval approach to test the null hypothesis that your sample of acorns is no different in size than my sample of acorns. Remember, this approach requires you to use the formula: 95% CI = ) ( 025 . 2 1 2 1 ) ( y y SE t y y . If zero is included in your calculated interval, then you must accept the null hypothesis ( H o ). If zero is not included in your calculated interval, then you can reject the null hypothesis with only a 5% probability of doing so in error. Please state whether you accept or reject the null hypothesis and show why. Show all work on this sheet (using the front and back)....
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 Spring '08
 BRITTON

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