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In each situation described below. write the hvootheses and indicate which test vou would choose on the graphing calculator: 1-Prop Z Test or T-Test or
In each situation described below. write the hvootheses and indicate which test vou would choose on the graphing calculator: 1-Prop Z Test or T-Test or Z-Test a. In 2015, it was reported that the mean age of video gamers was 35 years old. A recent random sample of 36 video gamers had a mean age of 34. Assume o = 6. Test whether the population mean age of gamers is less than 35 years. b. The US Dept of Commerce reports that 41.6% of internet users prefer DSL. A random sample of 1000 internet users shows 350 who preferred DSL. Test whether the population proportion who prefer DSL has decreased. c. On June 6, 2011, internettrafficreport.com reported the following response times to Asia, in milliseconds. (You may assume that the sample comes from a normally distributed population): 61 32 50 73 51 42 55 65 5/ 76 77 67 Test whether the population mean response time is less than 60 milliseconds. 71 d. The National Association of Home Builders reported that 57% of young people ages 18-24 were living with their parents. Suppose a sample of 100 young people showed 60 who were living with their parents. Test whether the population proportion has changed e. According to CreditReport.com, the mean credit score in Georgia in 2014 was 668. A random sample of 144 Georgia residents this year shows a mean credit score of 650. Assume o = 50. Test to determine if the population mean credit score in Georgia has decreased
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