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.

Recognize the diversity and function of marine ecosystems in relation to their physical environment.

Analyze the relationship between vegetation and climate, focusing on evapotranspiration and its effects.

Understand the role of physical geography in the distribution of biomes and ecosystems.

Understand how climate and geographical factors influence the distribution and characteristics of biomes.

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