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The average number of mosquitos in a stagnant pond is 100 per square meter with a standard deviation of 8. If 9 square meters are chosen at random for a mosquito count, find the probability that the average of those counts is more than 101.6 mosquitos per square meter. Assume that the variable is normally distributed.
Describe whether statements regarding statistical significance are true or false. When your results are found to be statistically significant, can one conclude that they will have a meaningful effect in the clinic.
How have you used the scientific process (unsystematic observation, building theories, and evaluating propositions) in your life to better understand your personality?
The proportion of drivers who use seat belts depends on things like age, gender, ethnicity, and local law. As part of a broader study, investigators observed a random sample of 117 female Hispanic drivers in Boston; 68 of these drivers were wearin..
A real estate broker hoped to develop an equation that could be used to predict the sales price of homes in a certain suburb. It seemed to him that the most important variable
The residents play both shuffleboard and poker, find the probability that a resident plays poker, given that they garden (that is, find P(poker | garden).
What is a hypothesis? Specifically, is it a statement about the population or the sample? What is the purpose of hypothesis testing?
What can we say about the probability distribution of x? Is it approximately normal? What are the mean and standard deviation?
In a study about postage tariffs and revenue, the European Economic Community wanted to look at the relationship between the number of postal employees in a country and the amount of domestic mail that was processed. They collected data for six di..
The Bureau of Labor Statistics in its Monthly Labor Review published the over per month percent change in the price index for imports from April 2006 to April 2007. Calculate the average percent change for the 9 months of 2006 and the 4 months of 2..
While in Paymor Hospital such exams were given in 110 out of 200 cases. In a left-tailed test for equality of proportions, the p-value is?
In the game of roulette, a ball is dropped into a spinning wheel, finally landing on one of the wheel's 38 different slots. The wheel has 18 black slots, 18 red slots, 1 green zero, and 1 green double-zero.
Product while 43 out of 80 females preferred it. Compute the test statistic and use technology to find the corresponding p-value based on this test.
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