Quiz: Module 7 - Quiz Time Remaining: 00:25:33 Submit C is Question: 1 pt 3 of 1
ID: 3321151 • Letter: Q
Question
Quiz: Module 7 - Quiz Time Remaining: 00:25:33 Submit C is Question: 1 pt 3 of 10 (5 complete) | This Quiz: 10 pts poss light bulb manufacturer guarantees that the :0 02, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e). mean lfe of a certain type of light bulb is at least 769 hours. A random sample of 27 light as a mean life of 744 hours. Assume the population is normally distributed and the population standard deviation is 59 hours. At a) Identify the null hypothesis and alternative hypothesis Ho: #769(claim) Ha = 769 B. C. Ho 2769 (claim) Ha :Explanation / Answer
The statistical software output for this problem is:
One sample Z summary hypothesis test:
: Mean of population
H0 : = 769
HA : < 769
Standard deviation = 59
Hypothesis test results:
Hence,
a) Hypotheses: Option C is correct.
b) Critical value = -2.05
Rejection Region: Option A is correct.
c) Test statistic = -2.20
d) Conclusion: Option B is correct.
Mean n Sample Mean Std. Err. Z-Stat P-value 27 744 11.354555 -2.2017595 0.0138Related Questions
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