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Unformatted text preview: that this data contain no outliers. d. Is it reasonable to use the onemean tinterval procedure to obtain a confidence interval for the mean number of chocolate chips per bag for all bags of Chips Ahoy! Cookies? Explain your answer. Yes it is reasonable to use the onemean tinterval procedure to obtain a confidence interval for the mean number of chocolate chips per bag for all bags of Chips Ahoy! Cookies, because the sample is large (n = 42). e. Determine a 95% confidence interval for the mean number of chips per bag for all bags of Chips Ahoy! Cookies, and interpret your result in words. ( Note: = 1261.6; s = 117.6.) We assume that s = = 117.6 117.6 18.146 42 X n = = = 2 1261.6 36.292 1225.308 2 1261.6 36.292 1297.892 X X X X == + = + = We can be 95.44% confident that the interval from 1225.308 to 1297.892 chips per bag for all bags of Chips Ahoy! Cookies, contains the population ....
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 Spring '09
 KOHN
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