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A population of scores has m=50 and o=10. If 5 points are added to every score in the population, then the new mean and standard deviation would be:
a) m=50 and o=10
b) m=55 and 0=10
c) m=50 and o=15
d) m=55 and o=15
Find out point estimate and 95% confidence interval for mean family dental expenses of all employees of company.
Construct a 98% prediction interval for the selling price of a 4l- year old house having 4500 square feet, 13 rooms, and an attached garage.
What is the probability of this project being completed earlier than 19 days?
Consider a binomial distribution with 15 identical trials, and a probability of success of 0.5. Use the normal approximation to find the probability that x = 2.
Evaluate a simple aggregate price index for 2004. Use 2000 as the base period - Estimating the simple aggregate price index.
Be certain to mention the direction of the relationship, the strength of the relationship, and whether our findings are statistically significant
Does the normal distribution yield a good approximation of the actual results?
Two tools that are often used in this process are the contingency table and the decision tree. What are these tools and how to they help us to make decisions under uncertainty when we are dealing with probabilities?
Suppose that you're the Quality Manager for the Emerson D. Meritz Machine Tool Company. Your model IE566 grinding machine is afflicted by three types of defects classified as major (type A), serious (type B) and minor (type C).
Suppose a population proportion is .40, and 80% of the time when you draw a random sample from this population you get the sample proportion of .35 or more.
Develop a linear regression equation for the given data and forecast how much money Robert will win if he spends $30.
The article should include a margin of error and confidence interval. Discuss the subject matter in the article, and interpret the results and what the confidence interval and margin of error mean as they apply to the specific subject matter.
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