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A pharmaceutical company claims that four out of five doctors prescribe the pain medicine it produces. If you wish to test this claim, how would you set up the null and alternative hypotheses?
Identify the explanatory variable ant the response variable - can you conclude that there is a significant linear correlation between earnings per share and dividends per share?
Compute a 99% confidence interval for the true average number of months taken by bankruptcy petitioners to acquire debts listed on their petitions.
One flight daily to a certain destination. The following information shows the probability distribution of late arrivals for that flight in the past month:
NASA is planning many Mars missions with rover vehicles. A typical rover is a solar-powered vehicle which will see where it is going with TV cameras and will measure distance to objects with laser range finders.
during ejection from a military airplane the pilots acceleration must not exceed 16g ig injury is to be avoided.
With regard to the standard deviation, illustrate how and why the larger the deviation number, the more difficult it would be to predict an outcome. Use specific examples to illustrate.
The mean number of cargo ships that arrive at a port is 3 per day. The port has staff and facilities to handle up to 6 ships in a day. Using the Poisson distribution, find the probability that, on a given day,
which of the following statements are true if the value of the test statistic for a two-tailed z test is z -1.56?a.
Mean u=222 days and standard deviation o=13 days. What is the probability that a randomly selected pregnancy lasts less than 218 days?
Average size of ready-made garments. (ii) Average marks of a student and when median is greater than mean, and (ii) When Mean is greater than median.
Finding the probability selecting a defective item from a collection of items using tree diagram
The correlation between self-esteem and shyness is -.50. Interpret this correlation.- Which is larger-a correlation of +.45 or a correlation of -.60? Explain.
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