Question

Q.1: Jiyansh is the financial manager for an advertising company. He would like to compare the
daily expenditures of the marketing employees and of the human resource employees. He has
collected the following information:
Marketing
142
136
165
146
135
131
Human
139
120
149
143
129
102
130
Resource
Compute the standard error of the difference between the two means. Using 10 percent
significance level, whether there is sufficient evidence to show that the daily expenditure of the
marketing employees are more than the employees of human resource department.
Q.2: A manufacturing company has manufactured three machines for londing the goods. The
following Table shows that how many goods can be loaded in one hour. The data were found by
testing each method in several trials.
Machine A 57 62 65 58 61 57
Machine B 59 55 66 51 64
Machine C 68 54 63 59
Are the three machines equally effective? Use the 05 level of significance.​

Answer 1

Answer:

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