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Assume that a simple random sample has been selected from a normally distributed population and test the given claim. State the final conclusion that addresses the original claim and select four correct choices. A manufacturer uses a new production method to produce steel rods. A random sample of 17 steel rods resulted in lengths with a standard deviation of 2.1 cm. At the 0.10 significance level, test the claim that the new production method has lengths with a standard deviation different from 3.5 cm, which was the standard deviation for the old method.
a camera manufacturer just shipped a batch of 36 digital cameras to local retailers and seven of the cameras have a
Would that daily sales figure be considered a potential outlier? why or why not? e) Find the probability that sales on a randomly selected day are at most $3445.
the number of lightning strikes on a square kilometer of open ground in a year has mean 6 and standard deviation 2.4.
An elevator starts at the basement with 8 people (not including the elevator operator) and discharges them all by the time it reaches the top floor, number 6.
If one of these respondents is randomly selected, what is the probability of getting someone who has been in a car accident?
For commercial banks in each state, the U.S. Federal Deposit Insurance Corporation has listed their total deposits (billions of dollars) as follows.- Construct a frequency distribution and a histogram for these data.
Normally distributed with a mean of $ 1750 and a standard deviation of 300. What's the probability that a randomly selected state has a per capita GNP at or below $950?
Compute the mean and standard deviation using the formulas given in this book. Check your results by entering the data into a statistical package and obtain their results for the means and standard deviations.
in a general population what is the probability of your classmate being male?using the data collected from the student
provide an appropriate response. define independent and dependent samples and give an example of
A researcher working with socioeconomic data showed a significant positive correlation between the number of local hospitals and the life expectancy.
What is correlation analysis? How can correlation analysis be used in a business decision or examples specifically related to strategy formulation and implementation?
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