# Question: Excel was asked to generate 50 Poisson random numbers with

Excel was asked to generate 50 Poisson random numbers with mean λ = 5.

(a) Calculate the sample mean. How close is it to the desired value?

(b) Calculate the expected frequencies assuming a Poisson distribution with λ = 5. Show your calculations in a spreadsheet format.

(c) Carry out the chi-square test at λ = .05, combining end categories as needed to ensure that all expected frequencies are at least five. Show your degrees of freedom calculation.

(d) Do you think your calculations would have been materially different if you had used the sample mean instead of λ = 5.0? Explain.

(a) Calculate the sample mean. How close is it to the desired value?

(b) Calculate the expected frequencies assuming a Poisson distribution with λ = 5. Show your calculations in a spreadsheet format.

(c) Carry out the chi-square test at λ = .05, combining end categories as needed to ensure that all expected frequencies are at least five. Show your degrees of freedom calculation.

(d) Do you think your calculations would have been materially different if you had used the sample mean instead of λ = 5.0? Explain.

## Answer to relevant Questions

During the 197374 hockey season, the Boston Bruins played 39 home games and scored 193 points, as shown below. (a) Estimate the mean from the sample. (b) Calculate the expected frequencies assuming a Poisson ...Use MINITAB's Stat > Basic Statistics > Normality Test to obtain a probability plot for the Ashoka Curry House carry-out order data (see Exercise 15.16). Interpret the probability plot and Anderson-Darling statistic. Was ...A student team examined parked cars in four different suburban shopping malls. One hundred vehicles were examined in each location. Research question: At α = .05, does vehicle type vary by mall location? (Data are from a ...A survey of randomly chosen new students at a certain university revealed the data below concerning the main reason for choosing this university instead of another. Research question: At α = .01, is the main reason for ...Computer abuse by employees is an ongoing worry to businesses. A study revealed the data shown below. Research question: At α = .01, is the frequency of disciplinary action independent of the abuser's level of privilege? ...Post your question