A food company is developing a low-calorie granola bar, and the company is interested in whether the appeal of the packaging design for the new product is related to a person's gender. There were 100 male and 100 female volunteers available for purposes of evaluation. Both males and females rated the design on a scale of 1 to 10, with 1 being “very unappealing” and 10 being “very appealing.” The mean rating for males was = 7.4, with a standard deviation = 1.5. The mean rating for females was = 8.0, with a standard deviation = 2.0. Let μ1 and μ2represent the mean ratings we would observe for the populations of males and females, respectively, and assume our samples can be regarded as samples from these populations. Reference: Ref 18-7 The degrees of freedom for these t procedures are closest to
A food company is developing a low-calorie granola bar, and the company is interested in whether the appeal of the packaging design for the new product is related to a person's gender. There were 100 male and 100 female volunteers available for purposes of evaluation. Both males and females rated the design on a scale of 1 to 10, with 1 being “very unappealing” and 10 being “very appealing.” The
The degrees of freedom for these t procedures are closest to
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