daughters. The data pairs are from a journal kept by Francis Galton. Use the listed paired sample​ data, and assume that the samples are simple random samples and that the differences have a distribution that is approximately normal. Use a 0.05 significance level to test the claim that there is no difference in heights between mothers and their first daughters. Mother 69.0 69.0 63.0 62.5 62.0 65.0 60.0 66.0 63.0 63.0   Daughter 67.0 68.0 65.0 63.5 66.0 69.0 61.0 66.5 65.0 63.0 Identify the test statistic. t=enter your response here

please solve: B, C, and D     ch 10

The "Freshman 15" refers to the belief that college students gain 15 lb (or 6.8 kg) during their freshman year. Listed in the accompanying table are weights (kg) of randomly selected male college freshmen. The weights were measured in September and later in April. Use the listed paired sample data, and assume that the samples are simple random samples and that the differences have a distribution that is approximately normal. Complete parts (a) through (c). = 0 kg Ho: Ha H₁: Hd > 0 kg (Type integers or decimals. Do not round.) Identify the test statistic. t = 2.82 (Round to two decimal places as needed.) Identify the P-value. a. Use a 0.05 significance level to test the claim that for the population of freshman male college students, the weights in September are less than the weights in the following April. In this example, is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the April weight minus the September…

A sample survey by Comcast asked a random sample of customers about use of the Internet and about the type of community they lived in.  Here are the results: Internet Users:   Rural: 433     Suburban: 1072     Urban: 536 Nonusers:   Rural: 463     Suburban: 627     Urban: 388 Is there a relationship between Internet use and community type?  Give statistical evidence to support your findings.