Question: According to data published by Agency for Healthcare Research and Quality, the average hospital stay costs about $10,000 per stay in 2011. A recent

According to data published by Agency for Healthcare Research and Quality, the average hospital stay costs about $10,000 per stay in 2011. A recent study revealed that the mean cost of hospital stay of 25 patients was $10,950 with a standard deviation of $4000. A test of significance is conducted to see whether the average hospital stay costs greater than $10,000 using Ho HS 10,000 VS. HA #> 10,000. Calculate the test statistic. OA) t-1.19 B) z=-1.19 OC) t = -1.19 D) z = 1.19 E) t = 0.2375

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