In an Effort to Raise Ratings, a Television Network President

question 220

Short Answer

In an effort to raise ratings, a television network president decides to reduce the number of commercials. A random sample of 8 one-hour programs was monitored from each of two major networks. The data below reflect the time in minutes of commercials for each of the 16 shows. Suppose denotes the mean commercial time for network 1 and denotes the mean commercial time for network 2. Estimate using a 95% confidence interval. Assume both population distributions are normal and have equal variances.
What is the 95% confidence interval? (CI)
CI = ______________ Enter (n1, n2)
Since this interval contains zero, we are ______________ to say the two networks have significantly different commercial times.

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