Three editors of a city newspaper are selected at random andasked to rate on a s

Question

Three editors of a city newspaper are selected at random andasked to rate on a score of 0 to 100 the fairness of the news mediain political reporting (0 corresponds to very unfair).The samequestion is posed to three editors of small town papers.The largecity editors gave scores of 55,90 and 95;while, the small towneditors gave scores of 40,60 and 80.The table shows a computerprintout for results of a two-sample comparison of means.

Variable: Fairness

Paper      N  Mean   Std Dev   Std error

Large    3     80.00    21.794     12.583

Small    3     60.00    20.000      11.547

Use technology to find a 90% confidence interval for thedifference of the means.

Explanation / Answer

Two-Sample T-Test andCI

Sample N Mean StDev Mean
1           3 80.0   21.8    13
2           3 60.0   20.0    12

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