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Forty-nine percent of US teens have heard of a fax machine. You randomly select 12 US teens. Find the probability that the number of these selected teens that have heard of a fax machine is exactly six (first answer listed below). Find the probability that the number is more than 8 (second answer listed below).
determine whether the following statement is true or false and justify your answer if e and f are mutually exclusive
Weights in kilograms of boys at the start of 1st grade are approximately normal with mean 25, standard deviation 5. Based on the z-score for each
From a random sample of 50 employees who resigned from the state university system over the past 5 years, the average time between the termination date and reimbursement was 75 days, with a standard deviation of 15 days. Use the data to estimate t..
In general, hitters get on base 28.5% of the time. What is the probability that a hitter will get on base at least 2 out of 5 times?
The standard deviation is around 2.8. How many students should be sampled to be within 0.5 drink of population mean with 95% probability?
state the null and alternative hypotheses for the following conjecture a researcher thinks that if expectant mothers
The use of linear regression is a critical tool for a manager's decision-making ability. Please carefully read the example below and try to answer the questions in terms of the problem context. The results are as follows:
Conduct a hypothesis test to determine if an increase of 1 unit in the x variable will result in the decrease of the average value of the y variable.
Analyze the emergence of the counter-culture, identity politics, and liberation movements beginning in the late 1960s. Why did these movements emerge at that time?
Fandango claim's that the average cost of a movie ticket is at least $8.75 for an adult, with a known variance of $0.25.
Standard Normal distribution Use Table A (or technology) to find each of the following for a standard Normal distribution.
1. Explain how a correlational study differs from a correlational analysis.
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