A survey is conducted in Texas city to know the customer satisfaction levels of two
companies. 54 customers of Samsung company and 86 customers of Nokia 66 company
were randomly selected and were asked to rate their opinion. The survey results are
summarized in the following table.
ExxonMobil
Phillips 66
1,54
Ta = 86
My = 28.6
Hy = 20.44
O = 4.17
02 = 5.72
Find the sampling distribution of the difference between two sample means.
Answers
Answered by
2
Answer:
sorry I don't the answer
Similar questions