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A car enters a curved road at speed of 100km/h and slows down with constant decelaration to 50km/h in 12 sec. Accelerometer mounted inside the car records acceleration of 2meters square when the car is 6 second into the curve. determine the radius of curvature of the road at that point?
Ppopulation with a mean of 240 and standard deviation of 18. Find the mean & standard deviation of sample distribution of the mean?
q1. during the previous presidential elections in the united states very long wait times have been witnessed at
The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with a mean of 3.2 pounds and a standard deviaition of 0.8 pound.
The percent of persons residing in that county, by age. Use the population distribution to find the expected juror frequencies. Test the researcher's claim at α = 0.01.
Identify at least three methods of statistical inference. Describe in detail each method and how you could use this method in your discipline. You may not use the same tests indicated in your research proposal.
Assuming that the heights of college women are normally distributed, with a mean of 69 inches and standard deviation of 4.8 in, what is the percentage of women that are between 69 in. and 73.8 in.?
Suppose these data represent whole population. Determine the population mean and population standard deviation.
a certain office building infrequently experiences power outages. it is known that the probability of a power outage on
Person repeatedly and independent flips the fair coin to decide whether to take the step to left or to right from a point X. Find out expected number of times person returns to X.
A major hurricane is a hurricane with wind speeds of 111 miles per hour or greater. During the 20th century, the mean number of major hurricanes to strike the U.S. mainland per year was about 0.7.
show that if x and y are independent poisson random variables with parameters lambda1 gt 0 and lambda2 gt 0 thenpx y
Election officials take a random sample of 100 signatures and thoroughly investigate them to find that 84% are valid. Is this statistically significant evidence that the candidate has enough valid signatures overall? Explain.
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