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HRC surveyed a random sample fo 74 Twin Cities construction companies to find information on the costs of their health care plans. One of the item being traced is the annual deductible that employees must pay. The Dept of Labor reports that historically the mean deducible per employee is $502 which Stand Dev of $120. What is the change HRC finds a sample mean between $477 and $527? Calculate the likelihood that the sample mean is between $492 and $512. And what is the probability the sample mean is greater than $550?
In a recent survey, 10 percent of the participants rated Pepsi as being "concerned with my health." PepsiCo's response included a new "Smart Spot" symbol on its products that meet certain nutrition criteria
Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name. Estimate the value of the population proportion.
determine the p-value in each case and decide whether at the 5 significance level the data provide sufficient eveidence
a specific automotive part that a service station stocks in its inventory has an 8 chance of being defective. suppose
a sample of final exam scores is normally distributed with a mean equal to 20 and a variance equal to 25. what is the
1. The National Center for Health Statistics reports the following age breakdown of deaths in the United States during 2006. Source: The New York Times Almanac 2009, p. 392.
The National Turkey Association wants to experiment with three different feed mixtures for very young turkeys. Since no experience exists regarding the three mixtures, no assumptions can be made about the distribution of weights.
suppose a life insurance company insures the lives of 1000 men aged 30. if actuarial studies show that the probability
Suppose that a random requisition is found to have been incorrectly entered. What is the probability that it was processed by data entry specialist 1? By data entry specialist 2? By data entry specialist 3?
Speedy oil provides a single channel automobile oil change and lubrication service. Customers provide an arrive rate of 2.5 cars per hour
If you did not know anything about standard deviation of population from which sample was taken, find out the 95% confidence interval for mean test score.
The mean of this sample belongs to a sampling distribution.
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