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Biologist estimates that 50% of the deer in a region carry a certain type of tick. For a sample of 300 deer selected at random, what is the chance that 155 or fewer deer have this tick?
Assume that for population of students at school, distribution of x is well approximated by normal curve with mean 48 min and standard deviation 4 min.
If the mean times for both George and Julia are actually the same, what is the probability that George will be let go?
A stock price is currently $100. Over each of the next two three-month periods, it is expected to increase by 10% or fall by 10%. Consider a six-month European call option with a strike price of $105.
If the observed value is 4, the expected value is 5, and the standard error is 4, then the test value used for the z test is equal to
Indicate which of the following responses below is correct. Discuss why it is correct or discuss why standard deviation is such a valuable statistic in so many situations.
You read a report that says, "On the basis of the simple random sample of 100 high school seniors that took the SATM test this year, a confidence interval for µ is found to be 512.00 ± 25.76." What was the confidence level used to calculate this..
Random number generation based on discrete distribution and evaluate the average queue length, waiting time, and percentage utilization for each system.
Assume the chief does not want his officers to cite a car for speeding unless they are 99% sure that it is travelling at 58 miles per hour or faster. What is the minimum estimate of speed at which a car should be cited for speeding?
Assume that a population is normally distributed with a mean of 100 and a standard deviation of 15. Would it be unusual for the mean of a sample of 3 to be 115 or more? Why or why not?
Identify at least 2 variables for which you would utilize a repeated-measures ANOVA in your analysis. Describe the variables and their scale of measurement.
At 0.01 significance level is it sensible to conclude that modification reduced number of traffic accidents?
Why is it significant to be familiar with frequency distributions in the business world? Provide examples by using a distribution chart from a set of data.
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