6. (4 pts) Wearing Socks The United States has about 330 million residents. Suppose that you want to estimate the propor
Posted: Wed May 11, 2022 9:18 am
- 6 4 Pts Wearing Socks The United States Has About 330 Million Residents Suppose That You Want To Estimate The Propor 1 (143 KiB) Viewed 23 times
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6. (4 pts) Wearing Socks The United States has about 330 million residents. Suppose that you want to estimate the proportion of Americans who wore socks yesterday to within a margin-of-error of 3.5 percentage points with 95% confidence. Which of the following is closest to the number of people that you would need to randomly sample? Show work to support your choice. A. 30 B. 1000 €. 30,000 D. 1,000,000 E=.035 ت = 5، سے اتر 2 35 * 330000000 too 1155oooo 2 n = pq
pts) Infection Rates A medical investigation states that the average number of infections per week ospital in southwestern Pennsylvania is 16.3. A researcher claims that infections at this hospital increased. To test this claim, the researcher selects a random sample of 10 weeks had a mean per of 17.7 infections. The sample standard deviation is 1.8 infections. Is there enough evidence to prt the claim at a=0.01? Assume the variable is normally distributed and use the P-Value Method to he hypothesis. Source: Based on information obtained from Pennsylvania Health Care Cost Containment Council. Hou-16.3 claim Ha: u 7716.35 S8 = 1.8 4.3 n = 10 Yo - 16.3 C c=16.3 4:17.7 Plest (stats, 16.3, 1.8, 10 经 1P