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Epidemiologists are researching the relationship between two levels of tobacco exposure and a positive diagnosis of esophageal cancer. With SPSS, use the data set bd1.sav and the variables tob2 (dicho
A brand of television has a lifetime that is normally distributed with a mean of 7 years and a standard deviation of 2.5 years. What is the probability that a randomly chosen TV
A biology professor claimed that the proportions of grades in his classes are the same. A sample of 100 students showed the following frequencies:
Consider your study (Terrorism Ideology and Perception of National Security Strategies by local police), conduct a mock power analysis using G*Power. Include the results of your power analysis in a wo
The F-value is a ratio of two variance estimates. What variance is used as a numerator of the ratio?
Let A, B, C be three events such that P(A) = 0:5, P(B) = 0:6, P(C) = 0:8(a) Can any two of these events be mutually exclusive? Explain your conclusion
The length of time until the breakdown of an essential piece of equipment is important in the decision of the use of auxiliary equipment
Use a two-sample t-test within Minitab to test the hypothesis that the mean length of leaves on the north side is the same as the mean length of leaves on the south side.What do you conclud
Suppose a fast food restaurant wishes to estimate average sales volume for a new menu item. The restaurant has analyzed the sales of the items at a similar outlet and observed the following results:
In our example of research on lipstick, where E = $2 and S = $29, what sample size would we require if we desired a 99 percent confidence level? What about if we keep the 95 percent confidence level,
Find P-Value with 0.05 significance level, and state the conclusion about the null hypotheses (reject or fail to reject) With H1: p is not equal to 3/4, the test statistic is z=0.35
This week we are extending what we learned in simple linear regression to mulitple regression - multiple regression models include more than one independent variable to explain the vari
There is significant evidence at alpha=0.05 t o show that the populations of endotoxin levels in children living varying distances from operating farms are not equal.
Barron’s reported that the average number of weeks an individual is unemployed is 17.5 weeks (Barron’s, February 18, 2008). Assume that for the population of all unemployed individuals the
A crossover trial is planned to evaluate the impact of an educational intervention program to reduce alcohol consumption in patients determined to be at risk for alcohol problems
Using the Variable view in SPSS list what each of the values of the categories assigned for age represent.
A population has a mean of mu = 30 and a dtadard deviation of 5. if 5 points were added to every score in the population, what would be the new values for the mean and standard deviation?
The formal addition rule expressed the probability of a or b as follows: p(a or b) =p(a)+p(b)-p(a and b). Rewrite the expression for p(a or b) assuming that the addition rule uses the exclusive or ins
Suppose we analyzed the effect of grade point averages on grades in a specific class and found the results to have an R-aquared value of 0.53. What do we know? Are there other factor, neith or fifty t
Perform a hypothesis test to determine if there is a significant correlation (α =0.05) between number of hours of overtime worked and hours of sleep
Please show work and provide excel formulas for plots so that I can understand how to do the assignment. The density function of a continuous random variable X, the total number of hours, in units of
Sometimes data is easy to collect, at other times it may not be as easy. Sometimes in the real world the number of things/people we want to collect data from or about are so huge and we have to make d
Use the given data to find the best predicted value of the response variable.Eight pairs of data yield r = 0.708 and the regression equation y = 55.8 + 2.79x. Also, mean y = 71.125. What is the best p
If you are ask to minimize shipment cost, how much product should you ship from each Factoryto each Outlet.
Income: 1 = 0th-16th percentile, 2 = 17th-33rd percentile, 3 = 34th-67th percentile, 4= 68th-95th percentile, 5 = 96th-100th percentile