What is the critical value needed for this hypothesis test?

Blank C:

Suppose you are the parent of a small child who is crying and pulling on their ear. Consider the null and alternative hypotheses for this situation: Ho: The child is healthy Ha: The child has an ear infection You have a decision to make: Take the child to the doctor (you believe the alternative hypothesis) or wait it out (you believe the null hypothesis). If you make a Type II error, what happened?

Suppose Ella also wanted to estimate this variability and interviewed 4 people. When she calculated her sample standard deviation, she got a value of 0. What does this mean?

During a hypothesis test, the test-statistic is a t-value when…

Given that the student admitted is a transfer student, what is the probability that he/she did enroll in fall classes?

What is the break-even fine on a parking ticket that would make the choice to pay the meter the same as the expected value of not paying the meter?

Suppose Brian found his sample of size 30 had a sample average of $75 with a sample standard deviation of $20. With 95% confidence, find an interval estimate for the population mean.

What is a primary purpose of using a two-antenna system?

True or False: If we have a two-tail test with and , the appropriate decision is to REJECT the null hypothesis.