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Assume that you have a box with an equal number of $4, $6, $8 chips.
a. Find the population mean and the standard deviation.
b. Taking samples of size n = 2, find the mean of the sample means and the standard deviation of the sample means.
c. Explain the relationships between the different means and the different standard deviations.
d. Above what value is the top 15.87% of the data?
e. Between what two values is the middle 95.44% of the sample means?
Develop 3 regression models to forecast selling price based upon each of other factors individually. Which of these is best?
students enrolled in an introductory statistics course at a university were asked to take a survey that indicated
Choose a variable and collect data for at least three different groups (samples). Compare the means of the three groups using the one-way ANOVA technique. Complete the following
Conclude the finite population, correction factor.With the population size of 1,000 and a planned sample size of 200, what is the finite population, correction.
They then call these 100 people. Does this sampling plan result in a random sample? Simple random sample? Explain.
the random variable x represents the number of cars per household in a town of 1000 households. find the probability of
Testing for two Proportions - Is the difference between the averages statistically significant?
a study of pollutants showed that certain industrial emissions should not exceed 2.5 parts per million. you believe a
The sample to be 99% sure the sample mean is with 1 semester hour of the population mean for all students at this college?
One prominent physician claims that 70% of chose with lung cancer are heavy smokers. If his assertion is correct. find the probability that more than half are heavy smokers.
"MagTek" electronics has developed a smart phone that does things that no other phone yet released into the market-place will do. The marketing department is planning to demonstrate this new phone to a group of potential customers, but is worried abo..
sketch and determine the area under the standard normal curve that liesi.to the left of -3.20ii. to the right of
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