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It has been found from past experience that of the articles produced by a factory, 20% come from machine 1, 30% come from machine 2 and 50% come from machine 3. The percentages of satisfactory articles among those produced are 95% for machine 1, 85% for machine 2 and 90% for machine 3.
(a) An article is chosen at random from a lot. What is the probability that it is satisfactory ?
(b) Assuming that it is satisfactory, what is the probability that it was produced by machine 1 ?
Scores on a marketing exam are known to be normally distributed with mean and standard deviation of 60 and 20. a) Find the probability that a randomly selected student scores between 50 and 80. b) Find the probability that a randomly selected student..
in table 2 in p. 175 hatchett and park 2004 presented the correlations among optimism lot-r total and positive items
The manager of a furniture company has collected data on the amount of money spent on advertising and sales revenue for the last ten months. The data is as follows
Your write-up of this experiment should include your work to determine the n, your methodology, your record of the experiment, your confidence interval, your interpretation of the confidence interval, your formal hypothesis test and your comments ..
What p-value did you get in your randomization and explain in the context of the problem what the p-value means. What is the variable of interest and what graphical techniques will you use to describe your data?
jane wants to setup a photo shop. the cost to rent an office is 150 per week. the variable cost of making one photo is
A department store manager has decided that dress code is necessary for team coherence. Team members are required to wear wither blue shirts or red shirts. There are 9 men and 7 women in the team. On a particular day, 5 men wore blue shirts and 4 oth..
A metropolitan bus system sampler's rider counts on one of its express commuter routes for a week. Use the following data to establish whether the rider ship is evenly balanced by day of the week. Let α=0.05 . Day Monday Tuesday Wednesday Thursday Fr..
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Describe a circumstance when the mean is a very useful measure and a circumstance when it is misleading
Make a histogram of the data using a bar width
1. How is the Internet changing the field of marketing research? 2. Who would you say had the greatest responsibility within the marketing research industry to raise the standards of ethics - market research suppliers, market research clients, or fie..
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