statistics homework

  1. X

    Deriving the form of the best size for exponential distribution

    Hi everyone So in this question I am told that a supermarket claims that the mean time to serve a customer is equal to 4 mins.However, a customer claims it is greater than 4 mins. I am asked based off a sample of n=9, determine the form of the best test of which has size of a=0.05 So I...
  2. T

    Probability

    An MP3 player is loaded with 50 musical selections: 20 rock selections, 13 jazz selections, and 17 blues selections.? Edit The player is set on random play, so selections are played randomly and can be repeated . Determine the probability of each of the following outcomes. (a) The first...
  3. S

    Normal distribution populations with a subset of the population that is not norm. Dis

    Identify an example of a population that you would expect to be normally distributed. Explain why, according to you, it would be normally distributed. Then, describe a subset of the population you identified and explain why it would not be normally distributed and what the distribution would...
  4. M

    Endowment Insurance with Complete Life Expectancy

    Hello! I am new to actuary science and I need help for this question. Any feedback would be appreciated! Question: A five-year endowment insurance of 2000 issued to (x). The benefit is payable at the moment of death. You are given: a) Force of interest of 0.04 b) The conditional...
  5. J

    Help with regression analysis and 95% confidence interval

    Hello! We have a couple of tasks for an assignment where we need to use regression analysis and 95% confidence interval, we're not sure on how to do it so figured I'd ask you guys for help. We don't really need the result of the actual task, but rather an detailed explanation to how to do...
  6. Soccer23

    Binomial Probabilities

    Please help me with these two math problems! Please help me with these statistics problems! I'm really new to this online program for school and it's really hard without a teacher or peers to ask for help! :( Approximately 2% of the nation's children (about 1.7 million) have a parent who is...
  7. A

    homework help

    Hi, I have been working on my assignment all day and came to this problem, I am not sure what to calculate to get the answers requested, any help would be appreciated..:) The population of SAT scores forms a normal distribution with a mean of = 500 and a standard deviation of =100. If the...