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A magazine claims that its readers have an average annual income of $43,725 with a standard deviation of $3,856. You randomly sample on 27 of the magazine's readers and an average income of $38,251. Determine if the income of the readers is significantly less than the income claimed by the company using a = 0.01 and the prob-value approach.
Although the government has offered various incentives for population control, some argue that the birth rate, especially in rural India, is still too high to be sustainable. A demographer assumes the following probability distribution of the hous..
Use the GPA classification to adjust the weights of the respondents in the sample. What is the weighting-class estimate of the average viewing time?
In week one you were asked to read/watch the "slide share" show 99 Facts about the Future of Business. Then you were to create a list of five expectations that society has for business leaders from the slide show.
What is the probability that a cardiac patient who regularly participates in sports has a maximum oxygen uptake of at least 20 ml/kg?
A survey of 100 dog owners showed that the average dog ‘checked the mail' eleven times during an evening walk. Which question most probably represents the purpose of the study?
The random variable x, which is the number of occurrences of an event over an interval of ten minutes. It can be assumed that the probability of an occurrence is the same in any two time periods of an equal length. It is known that the mean number..
Dr Zak developed a test to measure depression. He sampled 100 university students to take his five item test. The group of students was comprised of 30 men and 70 women. In this group four persons were African American, six persons were Hispanic and ..
A manufacturer must decide whether to extend credit to a retailer who would like to open an account with the firm. Past experience with new accounts indicates.
Organizers of an Internet training session will charge participants $150 to attend. It costs $3000 to reserve the room, hire the instructor.
What are the mean and standard deviation of the amount he might spend in two consecutive days?- What assumption did you make in order to find that standard deviation? Are there any reasons you might question that assumption?
If next year's dividend is $10 and the market capitalization rate is 14%, what is the current stock price? (Round your answer to 2 decimal places
Suppose you are trying to estimate the average miles per gallon for a new brand of car. You take a random sample of 40 cars, and, for this sample, the average miles per gallon is 32 and the standard deviation for this sample is 2.2. Answer the fol..
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