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Stat 2 Lab #16: Identifying appropriate statistical techniques Learning objectives: Identify appropriate statistical techniques for a given applied problem, as well as when a given
Stat 2 Lab #16: Identifying appropriate statistical techniques Learning objectives: Identify appropriate statistical techniques for a given applied problem, as well as when a given technique is NOT appropriate Combine statistical techniques from different modules of the course to solve a given applied problem A political organization with 100,000 members takes a simple random sample of 1,000 members and asks for their annual income in 2018. The sample average is $25,000, with a standard deviation of $20,000. 30% of the sampled members reported incomes over $50,000. A box model will be used to estimate the percentage of all the members in the organization with incomes over $50,000. (a) The tickets in the box have values of (circle one): 0 or 1 0R incomes in dollars (b) TRUE or FALSE (circle one): The histogram of the incomes in the sample approximately follows the normal curve. Explain your answer. (c) TRUE or FALSE (circle one): The probability histogram of sample percentage of members with incomes over $50,000 approximately follows the normal curve. Explain your answer. (d) Calculate a 95%-confidence interval for the percentage of all members with incomes over $50,000
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