Business Statisos .. BUS240 “ Fal 2017 Homework: LAB 11: CH. 11 Confidence Inter
ID: 3325362 • Letter: B
Question
Business Statisos .. BUS240 “ Fal 2017 Homework: LAB 11: CH. 11 Confidence Intervals and Hypothesis Score: 0 of 4 pts Hw Score: 25%, 8 of 32 pts Section 11.4 Exercise 8 showed the amounts in the table (in $). The mean is $54 96 and the standard deviation in $21.15 the mean? 4061 81.43 4351 6442 44.79 8317 2804 bj How would the standard eor change if the sample sine had been 2 instead of 18 (Assume hot the sample standard devation din' change) 31.22 7274 35 33 556 5609 3781 52 65 a 45 58 96 a)The dard emor othe mean is Round to two decimai places as needed.) 4 1 5Explanation / Answer
a) n = 18
standaed error = sd / sqrt(n) = 21.15 / sqrt(18) = 4.99
b) n = 2
standaed error = sd / sqrt(n) = 21.15 / sqrt(2) = 14.96
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