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Average number of mosquitoes in pond is 80 per square meter with a standard deviation of 12. If 16 square meters are choses at random for a mosquiot count, find probabilty that the average of those counts is more than 83.0 mosquitoes per square meter. Assume the variable is normally distributed.
Find the power of the test designed to determine if the the new safety equipment is effective when the mean percent reduction is actually 2.3%. Assume that the population standard deviation is 12% and that α is 0.02. What is the power?
Out of the 109 males, 42% preferred Pepsi and out of the 53 females, 40% preferred Pepsi. Pepsi wanted to test to determine if the males preferred Pepsi more than females.
Find the sample space for the number of outcomes (you don't need to list the possible outcomes, just how many possible outcomes there are).
Statistics is science of conducting studies to: Solve a system of equations.
As you know, the percentile for a value is a measure of where that value stands with respect to the rest of the data. As a criterion for college admissions, why would many schools use a percentile value for a standardized test, rather than a raw s..
At.05 significance level is it reasonable to conclude that it takes longer to determination software issues? Determine the p-value?
Scores on an endurance test for cardiac patients are normally distributed with mean = 182 and standard deviation = 24.
We have a deck of 52 playing cards. What is the probability of drawing?
Twelve doctor's offices were given 3 lab inspections with the following results:
What is the most probable number of patients arriving each Saturday and give the main assumptions we make when we model the above situation using a Poisson distribution.
At the 5% level of significance, can we infer that the population mean weight of athletic men is lower than the population mean weight of non-athletic men by more than 2 pounds?
Describe the sampling distribution model of this mean.
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