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In a simple linear regression analysis, it is found that b1 = 2.556 and s(b1) = 4.122. The sample size is n = 22. Conduct an F test for the existence of a linear relationship between the two variables.
question 1. in an article a random sample of 42 felons convicted of impulsive murder was compared to a random sample of
Suppose the joint probability density function of X and Y is uniform in the plane square with corners (0,0), (0,3), (3,0) and (3,3). Find the probability of X > 1 or Y > 1. Find the probability of X + Y
Identification of study design - Description of study population and the sampling/selection process
efficacy of a drug. seventy-five 75 people with hypertension were given a new drug for the treatment of their
1 consider a resource-allocation problem having the following
The graduates find a job within 1 year of graduating. What is the probability that among 9 randomly selected graduates, at least 1 finds a job within 1 year.
Then you travel the same distance to another point C moving at a constant speed of 120 km/h. Your average speed for the entire trip from A to C is?
f x has a normal distribution with mean µ=15 and standard deviation σ= 3, describe the distribution of x values for sample size n, where n = 4, n = 16, and n = 100. How do the x distributions compare for the various sample sizes?
A shock can cause the failure of component 1 alone with probability p, component 2 alone with probability q, both components with probability r, or have no effects with probability 1-p-q-r. Suppose no repairs are possible and the system fails when..
Suppose a simple random sample of 30 days is selected for observation. What is the probability that the sample mean for the 30 days will be between 300 and 340 books?
the theorem that states that the sampling distribution of the sample mean is approximetly normal when the sample size n
The store used ANOVA to test if the mean sales for each credit card were equal. What are the degrees of freedom for the F statistic?
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