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

question 1

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, does it appear that changing belly star status increases the average self-image of Sneetches? Select the appropriate critical value (CV) , test statistic (TS) , and decision.(Use α = 0.10) . ​ ​

• A) CV = -1.6377; TS = -3.19; reject H₀
• B) CV = -4.5407; TS = -6.38; reject H₀
• C) CV = -1.3968; TS = -15.50; reject H₀
• D) CV = -2.8965; TS = -6.38; fail to reject H₀

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