What would be an appropriate critical value comparison to determine whether or not to reject the null hypothesis?

What is the value of your test-statistic?

What age would an NFL player be if his retirement age was in the top 10% for all players? In other words, what age would he be if he played longer than 90% of all players?

How large would the standard error be for the average commute time when we have samples with 100 students each?

Interpret the meaning of for a hypothesis test.

What is the critical value needed for this hypothesis test?

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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…