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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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qwertybio qwertybio
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A year ago
To study the effect of soothing music on a person’s blood pressure, two random samples of 220 adults were taken. One sample (sample 1) listened to soothing music for 5 min prior to having their blood pressure taken, while the other sample (sample 2) sat in silence. From previous studies, it was found that both populations have a standard deviation of 39.18. The average systolic blood pressure from the music sample was 114.5. The average systolic blood pressure from the silent sample was 122.8. Construct a 98% confidence interval on the difference in population mean blood pressures (music – silent).


▸

(–14.4448, –2.1552)



▸

(–17.9223, 1.3222)



▸

(–16.9903, 0.3903



▸

(–15.6219, -0.9781)

Textbook 
Introductory Statistics: A Problem-Solving Approach

Introductory Statistics: A Problem-Solving Approach


Edition: 3rd
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naderaidenaderaide
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A year ago
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qwertybio Author
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A year ago
Helped a lot
Kstan109
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Yesterday
You make an excellent tutor!
shelbycox
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2 hours ago
Smart ... Thanks!
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