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Ten bolts were selected randomly from a production line and the diameter of each was measured. Why do these diameters not have a binomial distribution?
A. Diameter is a continuous random variable.B. They have equal probability of success.C. The diameters of the bolts are not independent of one another.D. They do have a binomial distribution.
What size random sample should you take if you want to estimate the annual salary in the population with 99 percent confidence and a maximum margin of error of $250?
A wildlife biologist wants to do a test to see if there is a genetic trait linked to industrial toxins. Previous research says the trait is usually found in one out of every thirty frogs.
To estimate the mean of the population from sample information, we need to calculate the standard deviation of the distribution of the sample means around the population mean.
Otherwise, no ordering will take place. Find the steady-state probabilities of the state of this Markov chain?
Provide an example of a situation in which factor analysis, cluster analysis, and multidimensional analysis might be used.
How do you verify that the assumption of a normal distribution is correct if you've only the mean and standard deviation?
In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the following data have been gathered.
A special test is given to people complaining of sever headaches. if someone has a brain tumor, the test is positive with a probability of .8 (80%).
Thirty minutes later, a police officer measured their Blood Alcohol Content (BAC) in grams of alcohol per deciliter of blood. Estimate the mean BAC that happens thirty minutes after consumption of 7 cans of beer.
Give an example of a hypothesis test you could perform at a Surgery Center and what the hypotheses would be. State the null and alternative hypotheses in proper format.
The university policy department must write, on average, five tickets per day to keep department revenues at budgeted levels. Suppose the number of tickets written per day follows a Poisson distribution with mean of 6.0 tickets per day. Find the p..
Plasma glucose levels are used to determine the presence of diabetes. Suppose the mean in (plasma-glucose) concentration (mg/dL) in 35-44 year olds is 4.86 with standard deviation = 0.54.
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