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State University uses thousands of fluorescent light bulbs each year. The brand of bulb it currently uses has a mean life of 600 hours. A competitor claims that its bulbs, which cost the same as the brand the university currently uses, has a mean life of more than 600 hours. The university has decided to purchase the new brand if, when tested, the evidence supports the manufacturer's claim at the .05 significance level. Suppose 100 bulbs were tested with the following results: x¯ = 627.5 hours, s = 100 hours. Conduct the test using α = .05
If you could please solve this problem step by step, that would help me out tremendously.
The least squares method minimizes and identifies the range for a correlation coefficient - statements is least accurate concerning correlation analysis?
Find out the crude death rate, age specific death rate, standard death rate and adjusted death rate.
10 cartons are taken at random from an automatic filling machine.The mean net weight of the carton is11.8 kg and standard deviation of 0.15kg. Does the sample mean differ significantly from the intended weight of 12kgs?
The makers of Count Chocula breakfast cereal would like to determine, within 2 percentage points and with 99% confidence, the percentage of U.S. senior citizens who have Count Chocula for breakfast at least once a week. What sample size would you ..
1. Name the three basic types of accumulators. 2. Name the three major classifications of the separator accumulator. Give one advantage of each classification.
An experiment on elephants in captivity was done to find out whether breeding would occur more often when the elephants were kept together in a herd.
in a group of 13 people the mean age is 25 years. a person who is 36 years leaves the group. what is the new mean of
What is the mean absolute deviation for this set of data - What can Manuel conclude from these statistics - What can David conclude from these statistics
Gehrig. Ever since Lou Gehrig developed amyotrophic lateral sclerosis (ALS), this deadly condition has been commonly known as Lou Gehrig's disease.
Create a drawing or plan for a 2 x 3 experimental design that would lend itself to a factorial ANOVA. Be sure to identify the independent and dependent variables.
It is said that there are lies, damned lies, and then there are statistics. Statistics can be used for a myriad of good purposes but they are notorious
Several questions will be asked but the main outcome measure of interest will be the percentage of customers who were completely satisfied and plan to return and the average amount spent.
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