MKT 317 Ryan White N462 Office Hours: Tuesday 9:00 – 10:00 am Thursday 9:00 – 10:00 am & By Appointment.

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MKT 317 Ryan White N462 Office Hours: Tuesday 9:00 – 10:00 am Thursday 9:00 – 10:00 am & By Appointment

About Recitation  Class Format  Class Slides  NOT ON ANGEL

Two Types of Hypotheses NULL HYPOTHESIS Statement of no effect, no relationship, or no difference among the variables (independence) – denoted H 0 ALTERNATIVE HYPOTHESIS Statement in which some effect, relationship, or difference is expected (dependence) – denoted H 1

*ALWAYS * Put the equality in the NULL hypothesis

Put claim in specific form 1.If it has an equality in it → it is the null → alternative is the opposite without an equality 2.If it does not have an equality in it → it is the alternative → null is the opposite with an equality

Example 1 Mark Dantonio claims that his football team scores 49 points per game. How would you set up the null and alternative hypothesis to test his claim?

Hypotheses H0:H0: H1:H1: µ = 49 points µ ≠ 49 points

EXAMPLE 2 Government Agencies are devoted to ensuring that food producers package their products such that the volume listed on labels is correct. For example, bottles of ketchup labeled 16 oz must contain at least 16 oz. It is impossible to check all packages, so sampling is used in order to check whether there is enough evidence to infer with a 5% significance level that the mean weight of all bottles is under 16 oz.

Hypotheses H0:H0: H1:H1: µ  16 ounces µ < 16 ounces

Hypothesis Testing Procedure 1.Specify the null and alternative hypotheses 2.Choose the appropriate statistical test 3.Specify the desired level of significance 4.Compute the value of the test statistic 5.Compare the test statistic to the critical value (obtained in step 3)

HOW TO READ A Z-TABLE

HOW TO READ A T-TABLE