Ahypothesis will be used to test that a population mean equals 5 against the alternative that the population mean is less than 5 with known variance σ. what is the critical value, −−α ,for the test statistic for the significance level of 0.01?

Let r = 3. what is the value of r + 58?

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Maryann’s friends loved her bulletin board, and 4 of them asked her to make one for their homes. she offered to make each of her friends a replica of her bulletin board that measures 2 meters by 3 meters. how many kilograms of burlap should maryann collect to complete the bulletin boards for her friends? maryann should collect kg of burlap.