A Psychologist Is Studying the Effect of Belly Stars on Sneetches.A

Multiple Choice

A psychologist is studying the effect of belly stars on Sneetches.A random sample of four Sneetches is drawn, and a test of self-image is given to each Sneetch before and after having the belly star status changed.(If the Sneetch initially had a star, it was removed; if it did not have a star, one was created on the Sneetch using the patented "Star-off/Star-on" procedure.) From the following sample data, construct a 98% confidence interval on the population mean change in self-image associated with a star status change. ​ ​

A) (-26.7977, -4.20232)
B) (-23.4535, -7.5465)
C) (-30.7625, -0.2375)
D) (-37.5519, 6.5519)
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