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The probability that an individual is left-handed is 0.1. In a class of 30 students, what is the probability of finding at least five left-handers?
Construct a binomial distribution.
Find the mean, variance and standard deviation of the distribution.
Find a 95% confidence interval for the mean µ of the population from which the men were selected.
Determine the mean and standard deviation of the data. What percentage of the data lies within one standard deviation of the mean value?
For a normal distribution, find the z-score value that separate the middle 90% of the distribution from the 10% in the tails.
Need guidance on how to approach a statistics paper. Problem: utilize statistics to solve a business related problem. The synopsis should include a discussion of the specific problem, the research methodology used, the quantitative and qualitative..
Illustrate the maximum number of reservations that it could accept for a flight with a capacity of 160, if it needs the probability of accommodating all reservation holders to be at least 95%.
Assume that the smiling time of eight-week old babies, in seconds, follows a uniform distribution between 0 and 23 seconds, inclusive. This means that any smiling time from 0 to and including 23 seconds is equally likely.
Indicate which of the following responses below is correct. Discuss why it is correct or discuss why standard deviation is such a valuable statistic in so many situations.
The Travel Weekly International Air Transport Association survey asked business travelers regarding the purpose for their most recent business trip.
In a random sample of 10 adults from a nearby county, the mean waste generated per person per day was 4.35 pounds and the standard deviation was 1.88 pounds.
A sample of eight male professionals has an average yearly salary of $52,165. Find the average yearly salary for the 11 people.
Jim Sears manufactures farm equipment. His work requires the use of steel bars which must have a mean length of at least 50 inches. The bars can be purchased from a supplier in Kansas
In a study of 10 graduate students from a nurse education program, the average age of the group was 48.6 years and the standard deviation was 4.1 years. Assume the variable is normally distributed. Find the 95% confidence interval of the true mean..
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