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Assume the speed of vehicles along a stretch of I-10 has an approximately normal distribution with a mean of 71 mph and a standard deviation of 8 mph. The current speed limit is 65 mph. What is the proportion of vehicles less than or equal to the speed limit?
What proportion of the vehicles would be going less than 50 mph?
A new speed limit will be initiated such that approximately 10% of vehicles will be over the speed limit. What is the new speed limit based on this criterion?
In what way do you think the actual distribution of speeds differs from a normal distribution?
Criterion of realism or Hurwitz. Assume that the payoff from an investment depends on market conditions. Illustrate what is the criterion of realism value.
In what height interval must the company expect to determine middle 70% of kindergarteners?
Determine standard normal area for each of the following: Standard normal area P(1.22
Below are scores for 10 randomly selected students on each exam. 95% confidence interval for the mean scores on?
Finding the value of test statistic utilizing two-tail 't' test also interpret the result. The Commercial Bank as well as Trust Company is studying the use of its automatic teller machines.
At 1 excavation site 8641 pot shards have been found that have not presently been cleaned also identified. Define the probability.
To test this notion, eight paid volunteers were placed (individually) in a room in which there was no light from the outside and no clocks or other indications of time.
The measure of forecast accuracy that is not influenced by the measurement scale of the time series data is:
Determine the probability of fatal accident over lifetime? Describe your reasoning carefully. Suppose independent events. Why might the supposition of independence be violated?
Find out the constant using probability density function also cumulative distribution function. Assume X be a continuous random variable with probability density function.
Average performance evaluation is higher for managers hired from outside firm compared with those promoted from within? What other stories does this graph tell?
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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