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Use the following information to answer the next five exercises. Suppose the marketing company did do a survey. They randomly surveyed 200 households and found that in 120 of them, the woman made the majority of the purchasing decisions. We are interested in the population of households where women make the majority of the purchasing decisions.

Define the random variables $X$ and $P^{\prime}$ in words.

The random variable $X$ signifies the number of "successes" where the woman made the majority of the purchasing decisions of households.

$P^{\prime}$ is the proportion of the households sampled where the woman made the majority of the purchasing decisions.

Confidence Intervals

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so 65 wants us to define X and P prime inwards. So ex would be the number of women who made the majority of purchases. So the number of successes p prime would be the proportion of women in that sample who make the purchasing decisions.

Salisbury University

Confidence Intervals