The Sample Standard Deviations and Sample Sizes Are Given for Independent

question 77

Multiple Choice

The sample standard deviations and sample sizes are given for independent simple random samples from twopopulations. Use the two-standard-deviations F-test to conduct the required hypothesis test.
- $\mathrm { s } _ { 1 } = 5.17 , \mathrm { n } _ { 1 } = 25 , \mathrm {~s} _ { 2 } = 2.35 , \mathrm { n } _ { 2 } = 17$ ; right-tailed test, $\alpha = 0.01$

• A) Test statistic: \(\mathrm { F } = 2.2 .\) Critical value \(= 3.18 .\) Do not reject \(\mathrm { H } _ { 0 } .\)
• B) Test statistic: \(\mathrm { F } = 4.84 .\) Critical value: \(\mathrm { F } = 3.18 .\) Do not reject \(\mathrm { H } _ { 0 }\).
• C) Test statistic: \(\mathrm { F } = 4.84 .\) Critical value: \(\mathrm { F } = 3.18 .\) Reject \(\mathrm { H } _ { 0 } .\)
• D) Test statistic: \(\mathrm { F } = 2.2\). Critical value \(= 1.87 .\) Reject \(\mathrm { H } _ { 0 } .\)

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A diagnostic procedure using a gastrocope to visually examine the inner lining of the upper gastrointestinal tract, including the esophagus, stomach, and duodenum.

Fiber-Optic Tube

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A muscular organ in the digestive system that processes food by secreting acid and enzymes.