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A random sample of gasoline taxes (in cents) is shown here for 12 states. Use the data to estimate the true population mean gasoline tax with 90% confidence. Does your interval contain the national average of 44.7 cents?
Compare population means or proportions to determine the relationship between variables.
Provide at least five real life examples where legislation and daily life choices have been driven by what could be defined basically as rooted in statistical correlations and regression analyses.
Many educators feel their grades should fit a normal distribution and often apply curves to make them fit one. One way to do this is to convert numeric grades to z scores using the mean and standard deviation for the grades, then use an equation s..
A two tailed test is conducted at 5% significance level what is the P-value required to reject the null hypothesis.
Find the probability that their mean energy consumption level for September is greater than 1075 kWh.
One state lottery has 500 prizes of $1, 75 prizes of $15, 15 prizes of $100, 5 prizes of $450, 2 prizes of $1225, and 1 prize of 2500. Assume that 28,000 lottery tickets are issues and sold for $1. What is the lottery's expected profit per ticket?
Explain what property associated with the Central Limit Theorem you consider the most important contribution, enabling the use of the normal distribution for sample means.
Find out correlation coefficient r, If student take 35 minutes to complete exam, what is his predicted score.
Share 1 real-world binomial distribution situation and 1 real-world Poisson distribution situation. Be sure to explain why each example is defined as binomial or Poisson.
A case-control study of relationship between liver cirrhosis among both non alcoholics and alcoholics. Describe whether smoking is confounder.
Develop a pie chart to summarize these contributions. Develop a bar chart to summarize these contributions and why is it appropriate to construct a bar chart for these data instead of a histogram?
Overall, the amount of work-hours involved in the festival preperation is normally distributed around 100 hours withn a standard deviation of 12 hours.
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