The following table contains information on matched sample values whose differences are normally distributed. (You may find it useful to reference the appropriate table: z table or t table) Number Sample 1 Sample 2 18 20 13 12 3 22 21 4 22 21 16 22 6. 15 19 7. 18 16 8 16 21 Let the difference be defined as Sample 1- Sample 2. a. Construct the 95% confidence interval for the mean difference up (Negative values should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) Confidence interval is to

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b. Specify the competing hypotheses in order to test whether the mean difference differs from zero.
O Hg: Pp 2 0; HA HD < 0
O Hg: PD = 0; HA PD 0
Ho: PD 0: HA: PD > 0
c. Using the confidence interval from part a, are you able to reject Hg?
O Yes
O No
d. Interpret the results at
= 0.05.
O We conclude that the mean difference differs from zero.
OWe cannot conclude that the mean difference differs from zero.
OWe conclude that population mean 2 is greater than population mean 1.
OWe cannot conclude that population mean 2 is greater than population mean 1.
Transcribed Image Text:elp Save b. Specify the competing hypotheses in order to test whether the mean difference differs from zero. O Hg: Pp 2 0; HA HD < 0 O Hg: PD = 0; HA PD 0 Ho: PD 0: HA: PD > 0 c. Using the confidence interval from part a, are you able to reject Hg? O Yes O No d. Interpret the results at = 0.05. O We conclude that the mean difference differs from zero. OWe cannot conclude that the mean difference differs from zero. OWe conclude that population mean 2 is greater than population mean 1. OWe cannot conclude that population mean 2 is greater than population mean 1.
The following table contains information on matched sample values whose differences are normally distributed. (You may find it
useful to reference the appropriate table: z table or t table)
Number
Sample 1
18
Sample 2
20
2.
13
12
3
22
21
4
22
21
16
22
15
19
7.
18
16
8.
16
21
Let the difference be defined as Sample 1- Sample 2.
a. Construct the 95% confidence interval for the mean difference un. (Negative values should be indicated by a minus sign. Round
intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.)
Confidence interval is
to
Transcribed Image Text:The following table contains information on matched sample values whose differences are normally distributed. (You may find it useful to reference the appropriate table: z table or t table) Number Sample 1 18 Sample 2 20 2. 13 12 3 22 21 4 22 21 16 22 15 19 7. 18 16 8. 16 21 Let the difference be defined as Sample 1- Sample 2. a. Construct the 95% confidence interval for the mean difference un. (Negative values should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) Confidence interval is to
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