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Q1) Robert wishes to know if there is relation between money spent on gambling and winnings
Money spent
Money won
16
330
12
270
18
380
14
300
1) Determine equation of regression line relating money spent (x) and money won (y).
If he spent $15, how much can he expect to win?
Q2) Provided following data on number of pints of ice sold at local ice cream store for 6-period time frame:
Period Demand
1 200
2 245
3 190
4 270
5 280
6 300
a) Calculate a 3-period moving average for period 7
b) Compute the MAD of the forecast
In fitting the simple linear regression model Yi ~ N (α + β xi, σ 2 ) to the following data:
4 7 7 5 2 9 7 6 8 5 8 4 1 5 2 8 7 6 6 9. (a) Determine three quartiles and (b) draw box-and-whisker plot of the data.
The following data from a sample of 100 families show the record of college attendance by fathers and their oldest sons: in 22 families, both father and son attended college; in 31 families, neither father nor son attended college; in 12 families,..
Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values: 1, 2, 2, 3, 4, 5, 5, 5, 5, 6 What is the vari..
Evaluate the strength of the relationship by computing the coefficient of determination.
To find out whether the course is effective in increasing sales, the appropriate set of hypothesis for testing is:
Find probability using normal distribution.Using N (1152, 84), the Normal model for weight of Angus steers, what percent of steers weigh.
The management of a regional bus line thought its cost of gas might be correlated with its passenger/mile ratio. Comment on the data and correlation matrix below.
Develop a scatter diagram for the data and write a brief summary.
In 1,000 samples, assuming that H 0 is true, how many times would you expect to commit Type I error if:
The function that defines the probability distribution of a continuous random variable is a?For a continuous random variable x, the probability density function f(x) represents.
Computing the mean and standard errors of sampling distribution - Using the central limit theorem, find the means and standard errors of sampling distributions
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