The article CSI Effect Has Juries Wanting More Evidence (USA Today, August 5, 2004) examines how the

The article €œCSI Effect Has Juries Wanting More Evidence€ (USA Today, August 5, 2004) examines how the popularity of crime- scene investigation television shows is influencing jurors€™ expectations of what evidence should be produced at a trial. In a random sample of 500 potential jurors, one study found that 350 were regular watchers of at least one crime- scene forensics television series. Suppose you are interested in learning about the value of p, the proportion of all potential jurors who are regular watchers of crime- scene shows. The following table is similar to the table that appears in Examples 8.4 and 8.5 and is meant to summarize what you know about the sampling distribution of ˆ in the situation just described. The €œWhat You Know€ information has been pro-vided. Complete the table by filling in the €œHow You Know It€ column.

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What You Know How We Know It The sampling distribution of p is centered at the actual (but unknown) value of the population proportion. An estimate of the standard deviation ofp, which escribes how much the values spread out around the population proportion p, is 00205. The sampling distribution of p is approximately normal.