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Use Chebyshev's theorem to find what percent of the values will fall between 241 and 349 for a data set with a mean of 295 and standard deviation of 18.
Use the Empirical Rule to find what two values 68% of the data will fall between for a data set with a mean of 245 and standard deviation of 15.
How many subjects must be tested to determine the effectiveness of the product?
A student is taking a multiple choice exam in which each question has four choices . Assume that the student has knowledge of a correct answer to any of the questions.
Find out z values for 29 and 34 hours. What percent of garages take between 32 hours and 34 hours to erect?
Using Non-parametric test, whether there is significant difference in the motor coordination skills.
Use the relative frequency approach to construct a probability distribution for the number of tests taken.
Normal adult Mean Temperature is 98.2 and standard deviant is 0.62 with normal distribution. If 16 people are randomly selected determine the probability that their mean body temp is below 98.5 degrees.
Suppose the horses in a large stable have a mean weight of 1464 lbs, and a standard deviation of 111. What is the probability that the mean weight of the sample horses would differ from the population mean by less than 11 lbs if 34 horses are samp..
What is their maximum error of the estimated mean quality for a 92% level of confidence and an estimated standard deviation of 8?
The mean of a normal probability distribution is 60; the standard deviation is 5.
The profit for product 1 is $6 per unit, and the profit for product 2 is $4 per unit. Solve this model by using graphical analysis.
Assume you have drawn a simple random sample of 10 students from a college campus and recorded how many hours each student studies (X) during the ¯rst week of December, 2009. Results:
Does this sample indicate a smaller average? Use α = 0.05 and assume a normally distributed population.
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