A data set about speed dating includes "like" ratings of male dates made by the female dates. The summary statistics are nequals186, x overbarequals6.51, sequals1.83. Use a 0.05 significance level to test the claim that the population mean of such ratings is less than 7.00. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the null and alternative hypotheses? A. Upper H 0: muequals7.00 Upper H 1: munot equals7.00 B. Upper H 0: muequals7.00 Upper H 1: mugreater than7.00 C. Upper H 0: muequals7.00 Upper H 1: muless than7.00 Your answer is correct. D. Upper H 0: muless than7.00 Upper H 1: mugreater than7.00 Determine the test statistic. negative 3.65 (Round to two decimal places as needed.) Determine the P-value. 0 (Round to three decimal places as needed.) State the final conclusion that addresses the original claim. Fail to reject Upper H 0. There is not sufficient evidence to conclude that the mean

Does anyone know this? the andwer choices are: 79, 85, 101, and 135 degrees!

Asystem of linear equations with more equations than unknowns is sometimes called an overdetermined system. can such a system be consistent? illustrate your answer with a specific system of three equations in two unknowns. choose the correct answer below. a. yes, overdetermined systems can be consistent. for example, the system of equations below is consistent because it has the solution nothing. (type an ordered pair.) x 1 equals 2 comma x 2 equals 4 comma x 1 plus x 2 equals 6 b. no, overdetermined systems cannot be consistent because there are fewer free variables than equations. for example, the system of equations below has no solution. x 1 equals 2 comma x 2 equals 4 comma x 1 plus x 2 equals 12 c. yes, overdetermined systems can be consistent. for example, the system of equations below is consistent because it has the solution nothing. (type an ordered pair.) x 1 equals 2 comma x 2 equals 4 comma x 1 plus x 2 equals 8 d. no, overdetermined systems cannot be consistent because there are no free variables. for example, the system of equations below has no solution. x 1 equals 2 comma x 2 equals 4 comma x 1 plus x 2 equals 24

Three students each examine the system of linear equations shown. 8x + 4y = 16 8x + 2y = 8 caleb says there is exactly one solution. jeremy says there is no solution. kim says there are infinitely many solutions. which student is correct? provide mathematical reasoning to support your answer. answer in complete sentences. : d