## Question

###### 8) A random sample of 45 life insurance policy holders showed that the average premiums paid on their life insurance policies was S342 per year with a standard deviation of S58. Construct a 90% confidence interval for the population mean.

8) A random sample of 45 life insurance policy holders showed that the average premiums paid on their life insurance policies was S342 per year with a standard deviation of S58. Construct a 90% confidence interval for the population mean.

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