Question

Average Daily TV Viewing Time Per U.S. Household Year Hours Min Total Min 1950 4 35...

Average Daily TV Viewing Time Per U.S. Household
Year Hours Min Total Min
1950 4 35 275
1955 4 51 291
1960 5 6         306
1965 5 29 329
1970 5 56 356
1975 6 7         367
1980 6 36 396
1985 7 10 430
1990 6 53 413
1995 7 17 437
2000 7 35 455
2005 8 11 491
2010 8 21 501
(a) Fit a linear trend to the Total Min data. (Round your answers to 2 decimal places.)
  yˆ= ____t + _______
Math   Statistics-And-Probability   
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Answer #1

Output using excel:

Regression Statistics
Multiple R 0.992035
R Square 0.984134
Adjusted R Square 0.982692
Standard Error 9.798749
Observations 13
ANOVA
df SS MS F Significance F
Regression 1 65512.14 65512.14 682.308 3E-11
Residual 11 1056.17 96.01548
Total 12 66568.31
Coefficients Standard Error t Stat P-value Lower 95% Upper 95%
Intercept -7124.89 287.6402 -24.7702 5.33E-11 -7757.98 -6491.8
Year 3.794505 0.145266 26.12103 3E-11 3.474776 4.114235

a) Linear trend:

ŷ = 3.79 t + (-7124.89)

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