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A car insurance compancy has recorded the number of claims for the past quarter by age and gender. The information is recorded below.
Age Male FemaleUnder 25 25 1225-50 14 8Over 50 12 9
If a claim is randomly selected, what is the probability the person was under 25 or male?
Five test vehicles of each kind were crashed, with results given below. Research question: Are mean crash damages the same for these 3 vehicles?
1) There are 500 employees in a firm, 45% are female. A sample of 60 employees is selected randomly. a) Determine the standard error of the proportion.
Of the next 15 people that invest in this project, what is the probability that 5 or less people will result an annual net cash flow of at least $100,000.
Which of the following does not explain a possible relationship between variables when the null hypothesis is rejected
The statistical technique used in the regression analysis. The sum of squares is a mathematical approach to determining the dispersion of the data points.
Please share 3 real world examples of problems, which occurred due to the use of secondary data. Be specific about the consequences as well the secondary data used. You may use your own organization or research the net or literature for this one.
Can we conclude at the 5% significance level that the population mean weight of athletic men is lower than the population mean weight of non-athletic men?
Research question: Are the mean crash damages the same for these three vehicles?
Scrap rates per thousand (parts whose defects cannot be reworked) are compared for 5 randomly selected days at three plants. Does the data prove a significant difference in mean scrap rates?
Compare the differences of Simple random sampling & Cluster sampling using specific examples, and show the pros and cons of each method.
If the true mean for Saturday sales is now $4500, what is the probability of accepting the (false) null hypothesis.
A candy bar manufacturer is interested in trying to estimate how sales are influenced by the price of their product. To do this, the company randomly chooses 6 small cities and offers the candy bar at different prices.
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