A paint manufacturer fills cans of paint using a machine that has been calibrated to fill the cans to contain an average of 1 gallon(128 ounces) each. To test whether their machine has come out of calibration, the manufacturer takes a random sample of 25 cans and finds that they average 128.2 ounces with a stnadard deviation of 2 ounces. Is this strong evidence that the filling machine is set too high and thus longer calibrated properly?What are the null and alternative hypotheses in this situation?(note: H0 means null hypothesis;Ha means alternatively hypothesis) A) H0: avergage= 128; Ha: average= 128.2 B) H0: average=128; Ha: average <128 C) H0: avergae=128; Ha: average does not equal 128 D) H0: average=128; Ha: average >128
A paint manufacturer fills cans of paint using a machine that has been calibrated to fill the cans to contain an average of 1 gallon(128 ounces) each. To test whether their machine has come out of calibration, the manufacturer takes a random sample of 25 cans and finds that they average 128.2 ounces with a stnadard deviation of 2 ounces. Is this strong evidence that the filling machine is set too high and thus longer calibrated properly?What are the null and alternative hypotheses in this situation?(note: H0 means null hypothesis;Ha means alternatively hypothesis)
A) H0: avergage= 128; Ha: average= 128.2
B) H0: average=128; Ha: average <128
C) H0: avergae=128; Ha: average does not equal 128
D) H0: average=128; Ha: average >128
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