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1. I wish to find a 95% confidence interval for the mean number of times men change channels with a remote control during a commercial. Based on a preliminary study, I estimate σ = 15. How many commercials' worth of data do I need to have a margin of error no more than 3?
A. 10B. 97C. 96
2. I have computed a 95% confidence interval for the mean, μ, of a population as (13, 20). Based on this interval,A. there is a 95% chance μ is in the interval.B. 95% of the observations lie in the interval.C. the method gives correct results 95% of the time.
3. A researcher wants to know if tougher sentencing laws have had the desired impact in terms of deterring crime. He plans to select a sample of states which have enacted a "3 strikes" law and compare violent crime rates before the law was enacted and two years later. The correct set of hypotheses to test are
Determine whether the method of delivering teaching influences adherence with antiretroviral therapy.
Answer the following three questions based on what you know about statistics now.
The weight of the first orange minus the weight of the second orange) is a random variable with standard deviation and individual outcomes are uncertain but happen in a predictable manner through time.
The standard deviation of the time to complete the entire homework assignment
High levels of glucose in the blood are indications of diabetes, which is becoming more prevalent in the United States. Diabetes can lead to many complications such as blindness and heart disease. A random sample of 180 individuals had their blood su..
Which of the following measures only the strength of a relationship?
Analysis of data sets assignment
Find out the probability
MATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.
MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?
Find the probability of getting a head and rolling a six
Take a confidence interval for the difference in the average of renting between the first andthird hotel.
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