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Find the sample size needed to estimate the percentage of adults who have consulted fortune tellers. Use a 0.03 margin of error use a confidence level of 98% and the results from a prior poll suggesting that 15% of adults have consulted one.
In a classical experiment, Gregor Mendel observed the shape and color of peas that resulted certain crossbreedings. A sample of 556 peas was studied with the result that 315 produced round yellow,
A psychologist has designed a questionnaire to measure individuals' aggressiveness. Assume that the scores on the questionnaire are normally distributed with a standard deviation of 80.
The manufacturer of a coffee dispensing machine claims the ounces per cup is normally distributed with population mean equal to 8 ounces and standard deviation equal to 0.9 ounces. If 50 cups of coffee were measured, what is the probability that.
How would I go about finding a 95% confidence interval for the population mean if a sample of size 20 has a mean of 18.2 and a sample standard deviation of 3.6?
give and describe an example of an interval measurement
Following are different algebraic expressions of the production function. Decide whether each one has constant, increasing, or decreasing returns to scale.
Nicotine in cigarettes. To determine whether the mean nicotine content of a brand of cigarettes is greater than the advertised value of 1.4 milligrams, a health advocacy group tests
Compute the minimum sample size required assuming that no prior information is avaiable?
Discuss how the Empirical Rule works and how it relates to the bell curve. Then, explain Chebyshev's Theorem and how it is different from the Empirical Rule.
Use the least squares method to find the regression coefficients b0 and b1. State the simple linear regression equation.
There are 400 employes and 100 of them smoke. There are 250 males working for the company and 75 of them smoke. What is probability of an emloye selected random?
what is the probability that the sample mean is 25 grams or more?When answering this question on an assignment, you said n=10. Im confused as to why you said this/where this came
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