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A car insurance company has recorded the number of claims for the past quarter by age and gender. The information is recorded below. Male FemaleUnder 25 25 1225 - 50 14 8Over 50 12 9If a claim is randomly selected, what is the probability the person was under 25 or male?
Chi-square test for independent attributes - Are the opinions on the tax cut proposal independent of party affiliation? Use a = 0.01
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Use exponential smoothing to forcast Aug. income. Assume that the initial forecast for Feb. is $65,000. The smoothing constant selected is x=0.1
Use this information to make a 95% confidence interval to evaluate true average number of copies made each day at this company.
let X have one of the following distributions: if the prior probabilities are P(H0)= P(HA) which outcomes favor H0? What prior probabilities correspond to the decision rules with a= 0.2 and a =0.5
What is the probability of randomly selecting a student with a treadmill time greater than 25 minutes? In symbols, p(X>25)= ? What is the probability of randomly selecting a student with a time greater than 30 minutes? In symbols, p(x>30) ?
Suppose that a study based on a sample from a targeted population shows that people at a pizza restaurant are hungrier than people at a coffee shop. Make an interference based on the results of the study.
Give an example representing a discrete probability distribution and a continuous probability distribution. Explain why your choice is discrete and continuous.
Women make up 24% of the science and engineering workforce. In a random sample of 400 science and engineering employees, what is the probability that more than 120 are women?
You buy a new piece of equipment for $11,778 and you receive a cash inflow of 2,000 per year for 10years. What is the internal rate of return?
A marketing firm asked a random set of married and single men as to how much they were willing to spend for a vacation. At *alpha*= .05, is a difference in the two amounts?
Personal phone calls received by a new employee was 3,5, and 6. assume that samples of size 2 are randomly selected with replacement from this population of three values. Find the mean of the distribution.
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