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If X is a normally distributed random variable with mean 120 and standard deviation 44, find a value x such that the probability that X will be less than x is 0.56.
The "average" (mean) tire wore out at 41,000 miles, and the standard deviation was 4000 miles. Approximately what percent of the tires are likely to wear out before 40,200 miles?
Milligrams with standard devation s=1.0 milligram. construct a 95% confidence interval for the difference between the mean nicotine content of two brands of cigarettes.
What do you feel was the most important concept that you learned in this course? And why? Please illustrate with an example.
A chi-square test for goodness of fit is used to test whether or not there are any preferences among 3 brands of cola.
What is one difference between Japanese and European feudalism?
A doctor prescribed the drug penicillin to three different patients as a form oLtreatment for an infectious disease. It is known from the general population that 20 out of every 100 individuals are allergic to the drug.
The mean return for the random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57. Test the null hypothesis: H0: mu = 15% at α = 0.05.
a) Do a test to see if workers attitudes on this matter have changed using a 90% alpha. b) Explain to management what your findings are and what this suggests about future decisions vs work options.
Binomial and Bernoulli distribution has something in common, and so what the differences between binomial and geometric distribution? Given that Bernoulli is sometimes considered as a Bernoulli distribution.
an experimenter wants to conduct a hypothesis test on a claim that there was no difference between two population
given a normally distributed population with u 80 and 05. what is the probability of randomly drawing a score that
Standard deviation of $5,000. What is the lowest salary for those individuals with an MBA degree whose starting salary is in the top 10 percent?
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