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Question
A researcher is conducting a matched"‘pairs study. She gathers data on each pair in the study resulting in:| Pair | Group 1 | Group 2 |
| 1 | 10 | 12 |
| 2 | 8 | 9 |
| 3 | 11 | 11 |
| 4 | 8 | 10 |
| 5 | 9 | 12 |
Assume that the data are normally distributed in the population. The level of significance is selected to be 0.10. If a two-tailed test is performed, the null hypothesis would be rejected if the observed value of tis _______.
a) less than -1.533 or greater than 1.533
b) less than -2.132 or greater than 2.132
c) less than -2.776 or greater than 2.776
d) less than -1.860 or greater than 1.860
e) less than -2.000 or greater than 2.000
Answer
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Related questions
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Q:
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Q:
The mean square error (MSerr) is calculated by dividing the sum of squares error (SSerr) by the number of error degrees of freedom (dferr).
Q:
Annie Mikhail, market analyst for a national company specializing in historic city tours, is analyzing the relationship between the sales revenue from historic city tours and the size of the city. She gathers data from six cities in which the tours are offered. Annie's dependent variable is annual sales revenues and her independent variable is the city population. Regression analysis of the data yielded the following tables. Coefficients
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0.224675
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Q:
Annie Mikhail, market analyst for a national company specializing in historic city tours, is analyzing the relationship between the sales revenue from historic city tours and the size of the city. She gathers data from six cities in which the tours are offered. Annie's dependent variable is annual sales revenues and her independent variable is the city population. Regression analysis of the data yielded the following tables. Coefficients
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-0.14156
0.292143
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0.653331 x
0.105195
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df
SS
MS
F Se = 0.237 Regression
1
3.550325
3.550325
63.20809 r2 = 0.940483 Residual
4
0.224675
0.056169 Total
5
3.775 Annie's sample size is __________.
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Q:
Annie Mikhail, market analyst for a national company specializing in historic city tours, is analyzing the relationship between the sales revenue from historic city tours and the size of the city. She gathers data from six cities in which the tours are offered. Annie's dependent variable is annual sales revenues and her independent variable is the city population. Regression analysis of the data yielded the following tables. Coefficients
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3.550325
3.550325
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0.224675
0.056169 Total
5
3.775 Annie's regression model can be written as: __________.
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In the regression equation, y=2.164+1.3657x n=6, the mean of x is 8.667, Sxx=89.333 and Se=3.44. A 95% prediction interval for y when x=8 is _________
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A researcher has developed a regression model from fourteen pairs of data points. He wants to test if the slope is significantly different from zero. He uses a two"‘ tailed test and a = 0.01. The critical table t value is _______.
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Q:
In a regression analysis if SST = 200 and SSR = 200, r 2 = _________.
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The proportion of variability of the dependent variable accounted for or explained by the independent variable is called the _______.
a) sum of squares error
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Q:
The numerical value of the coefficient of determination must be _______.
a) between -1 and +1
b) between -1 and 0
c) between 0 and 1
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Q:
A standard deviation of the error of the regression model is called the _______.
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Q:
The following residuals plot indicates _______________. a) a nonlinear relation
b) a nonconstant error variance
c) the simple regression assumptions are met
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