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cng cng
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A year ago
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.

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Sneetch number1234
Image score before1208810025
Image score after13010011055

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▸

(–26.7977, –4.20232)



▸

(–23.4535, –7.5465)



▸

(–30.7625, –0.2375)



▸

(–37.5519, 6.5519)

​

Textbook 
Introductory Statistics: A Problem-Solving Approach

Introductory Statistics: A Problem-Solving Approach


Edition: 3rd
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roman91roman91
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A year ago
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cng Author
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A year ago
Thanks for your help!!
Katey_maree
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Yesterday
this is exactly what I needed
Roselalo
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2 hours ago
Thank you, thank you, thank you!
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