Question: A study gathered a simple random sample that included 24 St. Catharines residents and concluded that their mean weight is 61kg with standard deviation of

A study gathered a simple random sample that included 24 St. Catharines residents and concluded that their mean weight is 61kg with standard deviation of 3.88kg. Construct 90% confidence interval for St. Catharines residents's mean weight. Ensure to check for normality and test whether the sample size is valid. The population of St. Catharines is said to be 136, 803 (taken from www.stcatharines.ca). Write down the formulas used.

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