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Let X and Y be independent and identically distributed random variables with common standard normal pdf of
f(z) = (1/sqrt(2*pi))*e^((-z^2)/2)) , -infiniti < z < +infiniti
Let U=X+Y and V=X^2+Y^2 . Find the JOINT MGF(moment generating function) of U and V ?
The test statistics in a right tailed test is z= 2.50. Also use a .05 significance level and state the conclusion about the null hypothesis (reject null hypothesis or fail to reject the null hypothsis)
Conditional and compound probabilities.The table below gives the distribution of blood types by gender in a group of 1000 individuals.
Construct a 95 percent confidence interval for the true mean.
1. the incidence of occupational disease in an industry is such that the workers have a 20 chance of suffering from
How many pages should the manufacturer advertise for each cartridge if it wants to be correct 90 percent of the time?
Find the probability that the toll collector will have to wait longer than 26.30 minutes before collecting the 8th toll.
The professor has informed us that 7.93 percent of her students received grades of A What is the minimum score needed to receive a grade of A?
An experiment was performed to investigate lifetime of a component exposed to high heat. Three different oven types were used at either 550°F or 600°F.
The probability of getting a big order currently under negotiation is 0.4. The probability of losing money this quarter is 0.5.
A pilot survey reveals that 5 of the 50 sampled hold two or more jobs. How many in the workforce should be interviewed to meet your requirements?
If we wanted to shorten the interval of the estimation of the true mean of Saturday sales to a width of $600 in total, what should the size of our sample be to achieve it?
What is the p-value and compute a 95% CI for the difference in means between the two groups?
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