Find the sample size.
-ABI Insurance wants to estimate the average life expectancy to within one year with
95% confidence. Previous studies have shown the mean age life expectancy of its clients
To be 78.6 with a standard deviation of 4.48 years. How many randomly selected
Recently paid policies would they need to sample to achieve the desired level of accuracy?
A) 98
B) 121
C) 54
D) 78
E) 83
Correct Answer:
Verified
Q10: In a metal fabrication process, metal rods
Q11: Find the standard error of the mean.
-A
Q12: Find correct t* values.
-Grandma Gertrude's Chocolates, a
Q13: Find the margin of error.
-A manufacturer of
Q14: Grandma Gertrude's Chocolates, a family owned business,
Q15: Find the confidence interval.
-A small business ships
Q16: Interpret the confidence interval.
-A manufacturer of cheese
Q19: Describe t-distributions.
-A small business ships specialty homemade
Q20: Describe t-distributions.
-In a metal fabrication process, metal
Q21: Find the sample size.
-Grandma Gertrude's Chocolates, a
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