Ben and Jerry's Ice cream is producing a limited edition flavor "Strokes for Folks" and only 1000 pints will be produced and sent to markets mainly in the Southern US. The company wants to ensure that the fat content is at least 21%. To test the hypothesis that the mean is 21% against the alternative that the fat content exceeds this value, a random sample of 5 pints was tested, resulting in an average fat content of 22% with a standard deviation of 0.42%. a. state the hypothesis test, including null and alternative hypotheses. What can be concluded at the 0.5 level of significance? b. sketch the distribution of considering the null hypothesis is true. State the value of the standard deviation that corresponds to this distribution
Ben and Jerry's Ice cream is producing a limited edition flavor "Strokes for Folks" and only...
I need help on question 3! Problem 2: salaries of lawyers and doctors, mean edition An experiment is conducted to determine whether the mean salary for doctors and lawyers is the same. 13 doctors are sampled IID and their salaries are assumed to come from a normal distribution. 11 lawyers are sampled IID and their salaries are assumed to also come from a normal distribution. For time being, assume the variances in salary are the same for the doctor and...
need help with the last questions. Prothrombin time is a measure of the clotting ability of blood. For 10 rats treated with an antibiotic and 10 control rats, the prothrombin times (in seconds) were reported as follows: Control Antibiotic 10 25 10 23 sample mean sample standard deviation 10 (a) (3 points) What is the explanatory variable? Is it categorical or quantitative? Explanatory variable is type of treatment and is categorical. (b) (3 points) What is the response variable? Is...