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You are the designer for your company's web site. You have data to indicate that the mean download time for the homepage is 5.8 seconds and that the standard deviation of download time is 2.1 seconds. If we assume that the download times are normally distributed, what percent of users will wait between 4 and 8 seconds for the homepage to download? Explain your findings so that your non-quantitative partner will understand them.
To estimate the mean of the population from sample information, we need to calculate the standard deviation of the distribution of the sample means around the population mean.
Calculate power of test if researcher uses a sample of n = 16 individuals.
Design a contingency table that will hold your data. What are your degrees of freedom and critical value at a 0.05 confidence level? You do not need data to answer this.
Developing a linear programming problem using Commuter Bus scheduling to minimize the total cost.
Choose the correct conclusion regarding the claim that the weights of statistics text vary more than the weights of text in general.
In the history class the mean score was 76 with standard deviation 3.
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
Explain finding value of test statistic and P-value also understand the result. At the .01 significance level can we compute that the mean fare has increased.
There is a statistical deception here. Explain what is deceptive about the bar graph.
Calculate correlation coefficient for these sample data.
Calculate the value of Pearson correlation. Illustrate what information is provided by the numerical value of the Pearson correlation.
Conduct the hypothesis test and compute the p-value. At a 0.05 level of significance, what is your conclusion?
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