A) Determine the population mean, p and the sample mean x-bar. B) Classify the hypotheses test as two-tailed, left-tailed, or right-tailed. Explain your answer. C) Determine the null hypothesis for the hypothesis test. Write out in words and in math symbols.

Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter6: Topics In Analytic Geometry
Section6.4: Hyperbolas
Problem 5ECP: Repeat Example 5 when microphone A receives the sound 4 seconds before microphone B.
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Can I get some help on problem 4 A-C

Problem 4: A company has developed a new deluxe AAA battery that is supposed to last longer
than the regular AAA battery. However, these new batteries are more expensive to produce, so
the company would like to be convinced that they really do last longer. Based on years of
experience, the company knows that its regular AAA batteries last for 30 hours of continuous
use, on average. The company selects an SRS of 15 new batteries and uses them continuously
until they are completely drained. The sample mean lifetime is 33.9 hours with a standard
deviation of 3.78 hours.
A) Determine the population mean, u and the sample mean x-bar.
B) Classify the hypotheses test as two-tailed, left-tailed, or right-tailed. Explain your answer.
C) Determine the null hypothesis for the hypothesis test. Write out in words and in math
symbols.
Transcribed Image Text:Problem 4: A company has developed a new deluxe AAA battery that is supposed to last longer than the regular AAA battery. However, these new batteries are more expensive to produce, so the company would like to be convinced that they really do last longer. Based on years of experience, the company knows that its regular AAA batteries last for 30 hours of continuous use, on average. The company selects an SRS of 15 new batteries and uses them continuously until they are completely drained. The sample mean lifetime is 33.9 hours with a standard deviation of 3.78 hours. A) Determine the population mean, u and the sample mean x-bar. B) Classify the hypotheses test as two-tailed, left-tailed, or right-tailed. Explain your answer. C) Determine the null hypothesis for the hypothesis test. Write out in words and in math symbols.
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