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Sample of 25 bags of candies is selected at random: The sample mean weight of the bags E is 2.5 ounces with sample standard deviation of 25 ounces. Find 95% confide...

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Sample of 25 bags of candies is selected at random: The sample mean weight of the bags E is 2.5 ounces with sample standard deviation of 25 ounces. Find 95% confidence interval for the (true) mean weight for the bags of candies. (Assume the weights of the bags nonnally distributed: = Round vour answers t0 the nearest hundredth: Also inelude In YOut "sTCr statemient; 95%0 confident that

sample of 25 bags of candies is selected at random: The sample mean weight of the bags E is 2.5 ounces with sample standard deviation of 25 ounces. Find 95% confidence interval for the (true) mean weight for the bags of candies. (Assume the weights of the bags nonnally distributed: = Round vour answers t0 the nearest hundredth: Also inelude In YOut "sTCr statemient; 95%0 confident that



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The standard deviation of a normally distributed population is equal to $10 .$ A sample size of 25 is selected, and its mean is found to be $95 .$ a. Find an $80 \%$ confidence interval for $\mu$ b. What would the $80 \%$ confidence interval be for a sample of size $100 ?$ c. What would be the $80 \%$ confidence interval for a sample of size 25 with a standard deviation of 5 (instead of 10 )?


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