3434 with a standard deviation of S In a random sample o 49 audited estate tax r

Question

3434 with a standard deviation of S In a random sample o 49 audited estate tax returns it was determined hat the mean amount o additional tax o e the mean additional amount of tax owed for estate tax returns was 0 4. onstruct and inte reta % confidence inter r Click the icon to view the t-distribution table. The lower bound is S(Round to the nearest dollar as needed.) The upper bound is S(Round to the nearest dollar as needed.) Interpret a 90% confidence interval for the mean additional amount of tax owed for estate tax returns. Choose the correct answer below. A. One can be 90% confident that the mean additional tax owed is between the lower and upper bounds. O B. One can be 90% confident that the mean additional tax owed is greater than the upper bound. ° C. One can be 90% confident that the mean additional tax owed is less than the lower bound.

Explanation / Answer

solution:-
given that mean = 3484 , standard deviation = 2504
90% confidence with df = 49 - 1 = 48 is t = 1.68
confidence interal is
=> 3484 +/- 1.68 * 2504 / sqrt(49)
=> (2883 , 4085)

Interpret a? 90% confidence interval for the mean additional amount of tax owed for estate tax returns.
option A.One can be? 90% confident that the mean additional tax owed is between the lower and upper bounds.

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