For determining half-lives of radioactive isotopes, it is important to know what the background radiation is in a given detector over a specific period. the following data were taken in a y-ray detection experiment over 98 ten-second intervals: assume that these data are observations of a poisson random variable with mean lambda. (a) find the values of x and s^2. (b) what is the value of the maximum likelihood estimator of lambda? (c) is s^2 an unbiased estimator of lambda? (d) which of x and s^2 would you recommend for estimating lambda? why? you could compare the variance of x with the variance of s^2, which is

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )