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Identify the null hypothesis, alternative hypothesis, test statistic, p-value or critical value(s), conclusion about the null hypothesis, and final conclusion that addresses the original claim.
Travel Through the Internet - Among 734 randomly selected internet users, it was found that 360 of them use the internet for making travel plans (based on data from a gallop poll). Use a 0.01 significance level to test the claim that among internet users, less than 50% use it for making travel plans. Are the results important for travel agents?
Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between the number of client contacts and the dollar amount of sales.
Any state auto insurance company took a random sample of 370 insurance claims paid out during a 1-year period. the average claim was $750 with a standard deviation of $150. find .99 confidence interval for the mean claim payment.
20% of teenagers in a small town say they like reading news online. Suppose you randomly select 7 teenagers from the town and ask them whether or not they enjoy reading news online. Find the probability that at least 3 say they enjoy reading news ..
A fair die is rolled until win or loss occurs: For k=1 to 5: if a 6 occurs on the kth roll you win N dollars and game ends; if a number
Calculate sample proportion and then also calculate a 99% confidence interval for true population proportion, p.
Suppose we have the following information from a single regression: What is the coefficient of determination? What is the correlation coefficient?
Briefly remind us of the two variables in your correlation and the operational definition of each. State the null hypothesis and the alternative hypothesis (be sure to clearly label each one) for your correlation.
Plot a scatter diagram of the results with Depth of Water as the independent variable.
Draw a tree diagram to show all possible outcomes of the experiment. Label the probability associated with each stage of the experiment on the appropriate branch.
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).
Determine the least squares estimators γ and δ for this second model associated to corresponding LS estimators α and β of first model?
The sat scores attainted by the students in nyc are approximately normally distributed with a mean of 500 and a standard deviation of 80. Find the percentage of students who score less than 700.
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