A random sample of 10 banks was selected and
their total first-quarter profits in 1990 were
recorded.
1144 351 1002 355 317
378 335 275 193 167
Test whether the mean profit of all banks in
1990 is equal to 400. Use a 5% significance
level
|
A random sample of 10 banks was selected and
their total first-quarter profits in 1990 were
recorded.
1144 351 1002 355 317
378 335 275 193 167
Test whether the mean profit of all banks in
1990 is equal to 400. Use a 5% significance
level
what is probability?
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