Using your Confidence Interval Excel Templates, answer: A credit card company is about to send out...
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Using your Confidence Interval Excel Templates, answer: A credit card company is about to send out a mailing to test the market for a new credit card. They want to estimate the true proportion of people who will sign up for the card nationwide. A margin of error of 0.002 or 0.2% is required. They assume about 0.7% of people will request the card. How big does the test mailing have to be? Use a 95% confidence level. Do NOT use commas in your final answer. (Example 2152 not 2,152). Question 13 1 pts Using your Confidence Interval Excel Templates, answer Suppose that a 90% confidence interval for the proportion of professors who wear eyeglasses is to be known within plus or minus 1%. A preliminary random sample of 100 professors results in 52 of them wearing eyeglasses. How many additional adults must be surveyed? Do NOT use commas in your final answer. (Example 2152 not 2,152). Using your Confidence Interval Excel Templates, answer: A credit card company is about to send out a mailing to test the market for a new credit card. They want to estimate the true proportion of people who will sign up for the card nationwide. A margin of error of 0.002 or 0.2% is required. They assume about 0.7% of people will request the card. How big does the test mailing have to be? Use a 95% confidence level. Do NOT use commas in your final answer. (Example 2152 not 2,152). Question 13 1 pts Using your Confidence Interval Excel Templates, answer Suppose that a 90% confidence interval for the proportion of professors who wear eyeglasses is to be known within plus or minus 1%. A preliminary random sample of 100 professors results in 52 of them wearing eyeglasses. How many additional adults must be surveyed? Do NOT use commas in your final answer. (Example 2152 not 2,152).
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