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Last year, there were 30,000 students at a university; their GPA had a mean of 2.9 and an SD of 0.6. This year, in a simple random sample of 100 students taken from this university, the GPAs have a mean of 2.95 and an SD of 0.55. Has the mean GPA at the university gone up since last year, or is this just chance variation.
In regards to the statistics paper you helped me with. Can you do a conclusion of the findings. I can edit it to my communication style, but I do need to do the following:
The following data provided by a coffee company are the roast time in minutes for five batches of coffee (x) and the resulting shrinkage in percent of the coffee weight(y).
Constructing a scatter plot and determining correlation. a. display the data in a scatter plot, b. calculate the correlation coefficient f, and c. make a conclusion about the type of correlation.
What is the theoretical probability that Mr. Nerdly assigns 10 homework problems as a result of a randomly selected student playing the birthday game?
What is the probability of a fatal accident over a lifetime?
What is the probability of selecting a value at random and discovering that it has a value of less than 395 pounds?
At the 5% level of significance, can we infer that branch A has a significantly higher proportion of satisfied customers than branch B?
The data show the total number of medals (gold, silver, and bronze) won by each country winning at least one gold medal in the 2006 Winter Olympics. Find the mean, median, and mode of the numbers of medals won by these countries.
In which category is ANOVA properly classified?
In this table, my research is about the average amount of money people expect to spend on attomeys when they are injured. Is there a difference, depending on type of injury? Do people expect to spend more when the injury happened in a car, on job,..
The travel time for a college student traveling between her home and her college is uniformly distributed between 40 and 90 minutes.
What is the equation for this regression model?
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