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Approximation the total number and bound on the error of estimation for proportion.
A company auditor was interested in estimating the total number of travel vouchers that were incorrectly filed. In a SRS of size n =50 oft of the group of N = 250, were filed incorrectly.
Find a 95% confidence interval for the proportion p of the inner-city, working-class group who eventually became alcoholics.
Experience has shown that radon gas level is approximately normally distributed for this population.
At the .01 level of signiicance, is the true mean greater than 10?
Florida State University administers a test of mathematics placement to students when they first enter the university.
FBI Report Do greater universities tend to have more property crime, would you speek that the correlation is low, moderate or high
Which of the given properties doesn't apply to theoretical normal distribution?
In a study of the consumer's view of the economy, the probability that a consumer would buy a house during the year was 0.0013, and the probability that the consumer would buy a car during the year was 0.198. There was also a 0.0100 probability t..
Use empirical Rule to evaluate proportion of costs within 2 standards deviations of mean. Write down these limits.
Then test to see whether it considerably varies from 0 [use alpha = 5%]. Don't forget to identify the null and alternative hypotheses.
The nation health department has concerns with the chlorine level of 0.4% mg/mL at a local water park raises to unsafe level.
Then use ogive to estimate median and first and third quartiles. Also utilize it to reply following question: What percent of 60 mutual fund loads are less than 75.
The quality-control inspector checks 200 pieces in a certain operation. The piece is either good or defective. The record for nine hours.
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