1. A factory has a machine that dispenses 75ml of fluid in a bottle. An employee believes that the average amount is less than 75 ml. Using 40 samples, he measures the average amount dispensed by the machine to be 70 mL with a standard deviation of 5.5. At 95% confidence level, is there enough evidence to support the idea that the machine is not working properly? Answer the following: а. Но: На: b. Level of significance a= c. Type of test. Choices: one-mean, two-tailed t-test two-mean, one-tailed t-test one-mean, one-tailed z-test two-mean, two-tailed z-test

Please do not give solution in image formate  In the United States, the average baby birth weight is 7 pounds (st. dev = 1). You are a community health care provider working is rural Texas and you are concerned that the pregnant mothers may not be getting the right prenatal care because it seems that their babies are born weighing less than average. In a given rural hospital sample, the mean birth weight is 6.4 pounds for 36 babies this year. Should you be concerned?

Write an equation to describe Louise's distance m miles from home after h hours.

Samuel scored a 72, 92 and 80 on his first three exams. What is the minimum score he needs to get on his next exam to get an average of 85 ?