Author Question: A psychologist is studying the effect of belly stars on Sneetches. A random sample of four Sneetches ... (Read 106 times)

Tb12162018 · **on:** Feb 26, 2023

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.

Sneetch number	1	2	3	4
Image score before	120	88	100	25
Image score after	130	100	110	55

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(–26.7977, –4.20232)

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(–23.4535, –7.5465)

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(–30.7625, –0.2375)

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(–37.5519, 6.5519)

Preeti · **Reply #1 on:** Feb 26, 2023

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