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What could be a set of null and alternative hypothesis for this experiment? Find MSTR and MSE.
Traditionally, the average price of homes sold in a medium size city in Canada was $220,000. A random sample of 81 homes sold this year showed an average price of $210,000 with a sample sta
When doing an experiment with many groups, what is the problem with doing t test between possible groups without an corrections? Why does use of the analysis of variance avoid that problem?
Find the indicated probabilities using the geometric distribution or poison distrubution. Then determine if the events are unusual, if convenient use the pioson probability table or technology to fi
If the p-value for the interaction term in a Two Factor ANOVA table is 0.057, what do you do? Interaction is significant, so the next step is looking at the main effects.
What is the probability that a 20 year old female will live through her 25th year? What is the probability of dying for males 21-26 years of age?
The mean weight of Lay's mini size chips is 28.3 gram with a standard deviation of 1 gram, what's the probability to get a sample of 30 bags of this kind of chips with an average weight less than 28
How do you find the pooled standard deviation in an ANOVA table?
The mean time to prepare a return is 90 minutes and the standard deviation of the distribution is 14 minutes. Suppose 100 returns from this year are selected and analyzed regarding the preparation.
Use smallest whole number. Example if the ratio was 55,20,20,9 then the expexed ration would be 6:2:2:1 Use smallest whole number.
Develop the linear programming model and determine how many salespersons should be contracted and how should their off-days be allocated.
What is the expected number of cars at the car wash?
An experiment consists of choosing a subset from a fixed number of objects where the arrangement/order of the chosen objects is not important. Determine the size of the sample space when you choose
A box contains 24 yellow, 32 green and 36 red jelly beans. If 15 jelly beans are selected at random, what is the probability that:
Given the returns and probabilities for the three possible states listed here, calculate the covariance between the returns of Stock A and Stock B. For convenience, assume that the expected returns
Identify three situations where the measured output of a process has a small variation and three situations where the variation is larger (for instance, the time for a phone call to ring the other
Why, when dealing with two independent samples where you cannot assume the population variances are equal, should the degrees of freedom be adjusted?
According to the american cancer society, melanoma, a form of skin cancer, kills 15% of Americans who suffer from the disease each year. Consider a sample of 10,000 melanoma patients.
Use technology to construct the confidence intervals for the population variance ?^2 and the population standard deviation ?. Assume the sample is taken from a normally distributed population.
Use technology to construct the confidence intervals for the population variance ?^2 and the population standard deviation?. Assume the sample is taken from a normally distributed population.
A company that produces DVD drives has a 9% defective rate. Let X represent the number of defectives in a random sample of 51 of their drives.
With the given confidence, it can be said that the population proportion of males ages 18 - 64 who say they have gone to the dentist in the past year is betwen the endpoints of the given confidence
What is the likelihood of this event, assuming two-thirds (.6667) of the stockholders approve? (Round your intermediate and final answer to 4 decimal places.)?
Given n = 36, = 0.05, and = 3, Draw a normal curve and label "acceptance" and "rejection" regions. Find the value of x-bar that would cause us to reject the null hypothesis.
Consider a small self-service car wash that has cars arriving with exponentially distributed inter arrival times at a mean rate of 15 per hour. The car wash has 3 washing bays, each equipped with a