Stats Help for College-level Students

Coins question

52) (from pg. 52) A coin, having probabiliyt p of landing heads, is flippe duntil head apears for the rth time. Let N denote the number of flips required. a) Calculate E[X] for the maximum random variable fo Exercise 37. b) Calculate E[X] for X as in Exercise 33. c) Calculate E[X] for X as in Exercise 34.

Insurance example

62)In deciding upon the appropriate premium to charge, insurance companies sometimes use the exponential principle, defined as follows. With X as the random amount that it will have to pay in claims, the premium charged by the insurance company is P=1/a In(E[e^ax]) where a is some specified positive constant. Find P when X ...continues

hypothesis testing

Hypothesis testing: Please help me with the sample problem 1 (two attachments, page 2 and 3). If you have trouble with the attachments, you can download them here: http://www.sunflowerlabs.com/samples/c2fecd130002.GIF http://www.sunflowerlabs.com/samples/c2fecd130003.GIF

hypothesis testing

Hypothesis testing: Please help me with the sample problem 2 (one attachment page 4). If you have trouble with the attachments, you can download them here: http://www.sunflowerlabs.com/samples/c2fecd130004.jpg

hypothesis testing

Hypothesis testing: Please help me with the sample problem 3 (one attachment page 5). If you have trouble with the attachments, you can download them here: http://www.sunflowerlabs.com/samples/c2fecd130005.jpg

hypothesis testing

hypothesis testing: Please help me with the sample problem 3 (one attachment page 7,8). If you have trouble with the attachments, you can download them here: http://www.sunflowerlabs.com/samples/c2fecd130007.jpg http://www.sunflowerlabs.com/samples/c2fecd130008.jpg

Hypothesis testing

Hypothesis testing: Please help me with these 2 sample problems (problems 9,10). If you have trouble with the attachments, you can download them here: http://www.sunflowerlabs.com/samples/c2fecd130009.jpg http://www.sunflowerlabs.com/samples/c2fecd1300010.jpg

Probability: Binomial distribution

24a) A coin having a probability p of landing heads, is continually flipped until at least one head and one tail have been flipped. a) Find the expected number of flips needed. 57) The number of storms in the upcoming rainy season is Poisson distributed but with a parameter value that is uniformly distributed over (0,5). T ...continues

Working with the Poisson random variable.

A manuscript is sent to a typing firm consisting of typists A, B, and C. If it is typed by A, then the number of errors made is a Poisson random variable with mean 2.6; if typed by B, then the number of errors is a Poisson random variable with mean 3; and if typed by C, then it is a Poisson random variable with mean 3.4. Let X d ...continues

Statistics

1)If X and Y are both discrete, show that xPX/Y9x/y)=1 for all y such that pY(y)>0. 10) Suppose X and Y are independent continuous random variables. Show that E[X/Y=y]=E[X] for all y