(Question 1) Researchers at a food company are interested in how a new spaghetti sauce made from green tomatoes (and green in color) will compare to their traditional red spaghetti sauce.
(Question 1) Researchers at a food
company are interested in how a new spaghetti sauce made from green tomatoes
(and green in color) will compare to their traditional red spaghetti sauce.
They are worried that the green color will adversely affect the tastiness scores.
They randomly assign subjects to either the green or red sauce condition. Participants indicate the tastiness of the
sauce on a 10-point scale. Tastiness scores tend to be skewed. The scores follow.
Red Sauce Green Sauce
a. What statistical test should
be used to analyze these data?
b. Identify H0 and Ha for this
c. Conduct the appropriate
d. Should H0 be rejected? What
should the researcher conclude?
(Question 2) You notice in your introductory psychology class that more women tend to sit up front, and more men sit in the back. To determine whether this difference is significant, you
collect data on the seating preferences for the students in your class. The data follow.
Front of the Room 15 27
Back of the Room 32 19
a. What is X2obt?
b. What is df for this test?
c. What is X2cv?
d. What conclusion should be drawn from these results?
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