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Nutritional requirement of daily allowance for iron for females under the age of 51 is 18 mg. A sample was conducted during a 24-hour period from 45 randomly selected females under the age of 51. For this study the sample mean is 14.68 mg with a standard deviation of 4.2 mg. At the 1 percent significance level are females under the age of 51 getting less than the recommended daily allowance of 18 mg of iron?
Find the probability of the offense winning and the probability of the defense winning when Both players roll only a single die.
The director for training at a company that manufactures electronic equipment is interested in determining whether different training methods have an effect on the productivity of assembly line employees.
suppose that 10 of all steel shafts produced by a process are nonconforming but can be reworked rather than having to
suppose that n units are randomly sampled and x number of the sampled units are found to have the characteristic of
The mean salary for engineers with less than 5 years' experience is $60,000 with a standard deviation of $5,000. Compute the z values for both Rob and Rachel.
a customer may roll two fair dice and rent a second movie for an amount in cents determined by the numbers showing on
What factors influence the regression line? If the line is in fact a curve, how will that influence the regression calculation?
Most businesses use some form of linear regression in forecasting future conditions. Give an example of the use of regression analysis at your organization. What were the independent and dependent variables?
Poisson Distribution to Calculate Unscheduled Flight Arrivals
What is the 95% confidence interval for the mean number of microwaves sold at a retail store in the chain last week?
1. The speed of automobiles on a section of I-95 is normally distributed with a population mean of 65 miles per hour and a population standard deviation of 8 miles per hour. A random sample of 30 cars is to be selected for a speed study.
A student takes a ten-question true-false quiz, but did not study and randomly guesses each answer. Find the probability that the student passes the quiz with a grade of at least 50% of the questions correct.
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