Test whether p1 > p2. The sample data are X11 = 118, n1 = 242, x2 = 133, n2 =306 (A) Determine the Test statistic: Z0 = (B) Determine the P-value
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I. Answer T (true) or F (false). For a normally distributed population of heights of 10,000 women, m = 63 inches and s = 5 inches. The number of heights in the population that fall between 66 and 68 inches is 1156. 2. In a normal distribution, approximately 91.31% of the area under […]
A cancer specialist from the Los Angeles County General Hospital (LACGH) rated patient optimism in 20- to 40-year-old male patients with incurable cancer in 1970. In 1990, the researcher examined hospital records to gather the following data: Socioeconomic status (1–7 rating of occupation; higher ratings indicate higher levels of SES) Age in 1970 Optimism in […]
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1.The data summary used to calculate the p-value in order to decide between the null hypothesis and the alternative hypothesis is called a A) test statistic. B) statistically significant result. C) significance level. D) p-value. 2. Determine if the statement is a typical null hypothesis (Ho) or alternative hypothesis (Ha). The average price of a […]
An extended warranty is a prolonged warranty offered to consumers by the warranty administrator, the retailer, or the manufacturer. A recent report in The New York Times (November 23, 2009) suggests that 20.4% of laptops fail over three years. Roberto D’Angelo is interested in an extended warranty for his laptop. A good extended warranty is […]
Summer reading programs are very popular with children. At the Citizens Library, Team Ramona read an average of 23.2 books with a standard deviation of 6.1. There were 21 members on this team. Team Beezus read an average of 26.1 books with a standard deviation of 2.3. There were 23 members on this team. Did […]
A survey showed that 80% of the 1600 adult respondents believe in global warming. Construct a 95% confidence interval estimate of the proportion of adults believing in global warming.
The following data represent glucose blood levels(mg/100 ml) after a 12 hour fast for a random sample of 70 women. Use six classes and determine the class width. (Enter the number only. Do not include any other text.) 45, 66, 83, 71, 76, 64, 59, 59 76, 82, 80, 81, 85, 77, 82, 90 87, […]