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As i study on childhood disease then my collected sample is 269 and variable include age of child ,vaccination status , social condition include type of house ,monthly in come .no of rooms in house ,person living in house , type of waste disposal and including age of mother.smoking status ,tell me what test applied?
Let X1, ..., Xn be a random sample from a two-parameter exponential distribution, Xi ~ EXP (theta, eta). (a) Assuming it is known that eta = 150, find a pivotal quantity for the parameter theta based on the sufficient statistic.
Carry out a hypothesis test to see if this claim may be refuted. State the null hypothesis and the alternative hypothesis that we would use for this test.
A health care professional wishes to estimate the birth weight of infants. How large a sample must she select if she desires to be 90% confident that the true mean is within 6 ounces of the sample mean?
How many students should be surveyed if a 90% confidence interval is desired and the margin of error is to be only 3%?
If F(x, y) is the value of the joint distribution function of the two continuous random variables X and Y a (x, y),
The president of the wholesale distributor is concerned about the possibility of stockouts causing a loss of customer confidence and loyalty and is interested in maintaining safety stock in inventory to prevent potential stockouts.
The lifetime of a light bulb is an Exponential RV with a mean of 800 hours. Let L represent the time (in hours) that one randomly selected light bulb will burn. What is the possibility the light bulb burns for more than 1000 hours.
The probability is 90% that the sample percentage will be contained within what symmetrical limits of the population percentage?
For each of the following populations, would a score of X = 50 be considered a central score (near the middle of the distribution) or an extreme score (far out in the tail of the distribution)?
Define a normal mode of operation when at least two frequencies are working and an emergency mode of operation when at least one frequency is working. Define the event when the system is working as OK.
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
Determine the coefficient of determination for this regression problem and comment on its capability to predict outcome.
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