Benefits of describing the data
If you were given a large data set such as the sales over the last year of our top 1,000 customers, what might you be able to do with this data? What might be the benefits of describing the data?
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Write the corresponding null and alternative hypothesis. Calculate the pooled sample variance for rat lifespan. Perform the test of the null hypothesis and write your conclusion in words.
Distribution of the average of a sample of fish. The number of a rare fish caught per trawl is known to have a Poisson distribution with mean equal to 1.5 fish.
Only 3% of a population carries the virus of a contagious disease. There is medical test to identify the virus, which identify with a 97% success rate among the virus-carriers. On the other hand, it can identify correctly among the non-carriers 94
Let X be a geometric random variable with parameter p. Find the maximum likelihood estimator of p, based on a random sample of size n. Consider the probability density function
A researcher is wanting to study the reliability of a commercial kit to test for arsenic in groundwater. The data is attatched.
Suppose that 103 identical balls are randomly distributed into 100 distinct boxes. Given that the total number of balls in the first three boxes is 5, finnd the probability that no box is empty.
Odds of success, odds ratio and LD-50, t-tests of single beta estimates and F-tests of subsets of beta estimates for linear regression, can you please provide example and definitions and calculation formua.
Consider the regression equation between the weight of the car (in lb) and fuel consumption: (miles/gallon)
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