Question

17. Make use of the sample evidence and critical values below to test for the following hypothesis: H0: ? ? 10, where ? is an unknown population mean. Sample Evidence: Sample size (n)=49; Sample mean (?)=8.25; Sample SD (S)=7 A | B =T.INV(2.5%,48) | -2.011 =T.INV(5%,48) | -1.677 =T.INV(95%,48) | +1.677 =T.INV(97.5%,48) | +2.011 Note: Column B reports the values that are computed by the commands in column A. a) At 95% level of confidence, we are able to reject the null hypothesis and accept the alternative that population mean is strictly equal to 10. b) At 95% level of confidence, we are able to reject the null hypothesis and accept the alternative that population mean is strictly less than 10. c) Only at 90% level of confidence, we are able to reject the null hypothesis and accept the alternative that population mean is strictly equal to 10. d) Only at 95% level of confidence, we are able to reject the null hypothesis and accept the alternative that population mean is strictly less than 10. e) We are unable to reject the null.

          17. Make use of the sample evidence and critical values below to test for the following hypothesis:
H0: ? ? 10, where ? is an unknown population mean.
Sample Evidence:
Sample size (n)=49; Sample mean (?)=8.25; Sample SD (S)=7

A | B
=T.INV(2.5%,48) | -2.011
=T.INV(5%,48) | -1.677
=T.INV(95%,48) | +1.677
=T.INV(97.5%,48) | +2.011

Note: Column B reports the values that are computed by the commands in column A.
a) At 95% level of confidence, we are able to reject the null hypothesis and accept the alternative that population mean is strictly equal to 10.
b) At 95% level of confidence, we are able to reject the null hypothesis and accept the alternative that population mean is strictly less than 10.
c) Only at 90% level of confidence, we are able to reject the null hypothesis and accept the alternative that population mean is strictly equal to 10.
d) Only at 95% level of confidence, we are able to reject the null hypothesis and accept the alternative that population mean is strictly less than 10.
e) We are unable to reject the null.

17. Make use of the sample evidence and critical values below to test for the following hypothesis:
H0: ? ? 10, where ? is an unknown population mean.
Sample Evidence:
Sample size (n)=49; Sample mean (?)=8.25; Sample SD (S)=7

A | B
=T.INV(2.5%,48) | -2.011
=T.INV(5%,48) | -1.677
=T.INV(95%,48) | +1.677
=T.INV(97.5%,48) | +2.011

Note: Column B reports the values that are computed by the commands in column A.
a) At 95% level of confidence, we are able to reject the null hypothesis and accept the alternative that population mean is strictly equal to 10.
b) At 95% level of confidence, we are able to reject the null hypothesis and accept the alternative that population mean is strictly less than 10.
c) Only at 90% level of confidence, we are able to reject the null hypothesis and accept the alternative that population mean is strictly equal to 10.
d) Only at 95% level of confidence, we are able to reject the null hypothesis and accept the alternative that population mean is strictly less than 10.
e) We are unable to reject the null.

Added by Suzanne H.

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