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A corporation owns several companies. The strategic planner for the corporation believes dollars spent on advertising can to some extent be a predictor of total sales dollars. As an aid in long-term planning, she gathers the following sales and advertising information from several of the companies for 2011 ($ millions).
Advertising Sales
12.5 148 3.7 55 21.6 338 60.0 994 37.6 541 6.1 89 16.8 126 41.2 379
Develop the equation of the simple regression line to predict sales from advertising expenditures using these data.
Two men are carrying a girl on a large plank that is 10m long and weights 200N. If the girl on a plank weighs 445N and sits 3m from one end, how much weight must each man support?
What is the pooled sample estimate of adult smokers in Alaska?
jeffs bowling scores are approximately normally distributed with mean 160 and standard deviation 13 while jacks scores
The BATF wants to evaluate true average lead level for California wines to within 29 parts per billion at 95% level of confidence?
In a study of children with a particular disorder, parents were asked to rate their child on a variety of items related to how well their child performs.
A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02. What is the probability that:
The spot rate in six months is E1 for $1.40. What will be the net amount the firm will receive from the put options (put payoff minus premium)?
Describe the Factorial ANOVA multivariate statistical type test and its potential usefulness when testing the impact of more than one independent variable (factor) on one dependent variable. For example the DV is stress. I will need creditable cit..
The variance of pre-exam grades was 9 and the variance of post-exam grades was 16.
Jan is a member of a class with 20 students that meets daily. Each day for a week (Monday to Friday), a student in Jan's class is randomly selected to explain.
a random sample of 109 light bulbs had a mean life of x558 hours with a standard deviation of o32 hours. construct a
find the minimum sample size you should use to assure that your estimate of will be within the required margin of error
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