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Given that the random variable X has the following cumulative distribution function F(x) = 1 - e-x, for x > 0. Find the probability density function, f(x), for the random varaible X
Mean and standard deviation are 584.6 and 34.28
assuming ship berthing follows a poisson distribution at jaxport. if a fuel spill occurs for 5 of all berthings. what
1. you are interested in testing the distance of two golf balls brand a and brand b. you take a random sample of 100
A medical researcher is interested in whether patient's left arms or right arms are longer. if 14 patients participate in this study (so that n left arms and n right arms are measured), how many degrees of freedom should the researcher use in her ..
A developmental psychologist is studying memory development in children. He is interested in determining the exact age at which children began to recall long-term episodic memories.
What is the 25th percentile of a X² distribution with 20 degrees of freedom? What symbol is used to denote this value?
Clinic evaluates that true population standard deviation is around $1,300. If confidence level is 95%, determine the required sample size in order to meet desired accuracy.
a sample of final exam scores is normally distributed with a mean equal to 20 and a variance equal to 25. what is the
A contractor is considering a sale that promises a profit of $32,000 with a probability of 0.7 or a loss (due to bad weather, strikes, and such) of $9000 with a probability of 0.3. What is the expected profit?
A company must hire a new CFO and prepares a final list of five candidates - all are equally qualified. Two of the candidates are members of a minority of a minority group. To avoid bias in the selection of the candidate
a batch of 40 semiconductor chips is inspected by choosing a sample of 5 chips. assume 10 of the chips do not conform
Can people really identify their favorite brand of cola? Volunteer tasted coca-cola classic, pepsi, Diet coke, and Diet pepsi, with the results shown below.
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