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During the nineteenth century, Asian and African rulers usually desired transfer of which of the following western technologies?
a) Medicinesb) Weaponsc) Navigational instrumentsd) Textile manufacturing equipment
In a poll of 150 randomly selected adults 78 said they favored a new proposition. compute a 95% confidence interval for the proportion of all adults in favor of the proposition at the time of the poll.
q1. a furniture store expects to sell 640 sofas at a steady rate next year. the manager of the store plans to order
q1. if a population distribution is known to be normal then it follows thata. the sample mean must equal the population
Discuss the circumstances whereby personal interviewing would be likely to be favoured rather than postal survey techniques in marketing research.
Based on a simple random sample of one hundred an analyst estimates the average hourly wage earned by workers in a city to be $30 and computes the margin of error to be $5. Can we conclude from this that most workers there earn between $25 and $35..
The mean weight of trucks traveling on the the highway is unknown. A state highway inspector needs an estimated mean. He selects 49 trucks passing the weighing station and gets a mean of 15.8 tons
A political action committee decided to poll its membership to determine if they were in favor of a certain potential law, similar to gun control.
1. Explain how modeling is used in decision analysis. What is meant by the term "requisite decision model"? 2. What role do subjective judgments play in decision analysis?
A salesperson obtained a systematic sample of size 20 from a list of 500 clients. To do so, he randomly selected a number from 1 of 25, obtaining the number 16. He included in the sample the 16th client on the list and every 25th client thereafter..
The standard deviation of the sample is $3,000. Interpret your findings.
Sales in hundreds of dollars over a five-day period and determine whether differences between the two groups are statistically significant.
a random survey of a small group of high school students collected information on the students age and number of bookd
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