A Random Sample of 40 Students Has a Mean Annual $\mu \text { if } \mathrm { c }$

question 75

Multiple Choice

A random sample of 40 students has a mean annual earnings of $3120. Assume the population standard deviation is $677. Construct the confidence interval for the population mean, $\mu \text { if } \mathrm { c }$ = 0.95.

• A)($2910, $3330)
• B)($210, $110)
• C)($4812, $5342)
• D)($1987, $2346)

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