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Find a 95 Percent Confidence Interval for the Difference Between σ\sigma

question 108

Multiple Choice

Find a 95 percent confidence interval for the difference between means where n1 = 50,n2= 36, Find a 95 percent confidence interval for the difference between means where n<sub>1</sub> = 50,n<sub>2</sub>= 36, <sub>1</sub> = 80, <sub>2</sub> = 75, \sigma <sub>1</sub><sup>2</sup> = 5 and \sigma <sub>2</sub><sup>2</sup> = 3. A) (4.16 5.84) B) (3.30 6.70) C) (4.40 5.60) D) (4.64 5.36) 1 = 80, Find a 95 percent confidence interval for the difference between means where n<sub>1</sub> = 50,n<sub>2</sub>= 36, <sub>1</sub> = 80, <sub>2</sub> = 75, \sigma <sub>1</sub><sup>2</sup> = 5 and \sigma <sub>2</sub><sup>2</sup> = 3. A) (4.16 5.84) B) (3.30 6.70) C) (4.40 5.60) D) (4.64 5.36) 2 = 75, σ\sigma 12 = 5 and σ\sigma 22 = 3.

Definitions:

Positive Charge

A type of electric charge, typically carried by protons, that repels other positively charged particles and attracts negatively charged particles.

Negative Charge

An electrical charge that results from having more electrons than protons in an atom or molecule.

Molecule

The smallest unit of a chemical compound that retains its chemical properties, consisting of two or more atoms bonded together.

Silica

A chemical compound of silicon and oxygen, often found in quartz and used in glass making and electronics.

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