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1. According to recent reports, 30% of Americans are now classified as obese. A sample of 800 Americans found that 278 of them were obese. According to the sample the odds a person is obese isA. 0.429.B. 0.533.C. 2.333.
2. According to a recent survey, 275 of 400 middle-aged Americans said they used the Internet regularly. 140 of 400 senior citizens said they used the Internet regularly. The odds ratio for a middle-aged American to use the Internet regularly isA. 2.20.B. 0.54.C. 0.6875.
3. According to a recent survey, 275 of 400 middle-aged Americans said they used the Internet regularly. 140 of 400 senior citizens said they used the Internet regularly. The log odds ratio for a senior citizen to use the Internet regularly isA. 0.788.B. -0.619.C. -1.050.
Sampling variability refers to the idea that different samples will include different individuals
Which of the following would have a binomial distribution and evaluate the binomial coefficient
An experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield. There were 64 plots, and each of the 16 factor combinations was randomly assigned to 4 plots
If a blue ball is selected you win nothing. Let X be the amount that you win. The expected value of X and let the random variable X be a random number with the uniform density curve given below
Find the probability of getting a head and rolling a six
The null hypothesis is that the distribution of mother's educational level is the same for both treatment groups. The value of the chi-square statistic is 7.422. Evaluate the P-value
Here is a scatterplot of average crawling age versus average outdoor temperature six months after birth followed by a plot of the residuals versus average outdoor temperature six months after birth.
There were 3 defectives in the first batch and 5 in the second. Find a 95% confidence interval for the difference in the proportion of defectives.
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..
Based on the equation of the least-squares line, we use software to predict the average number of home runs hit per game per team for the year 2001. We obtain the following.
This model is fit to the data using the method of least squares using statistical software, and the following parameter estimates and their standard errors are obtained.
The standard deviation of the time to complete the entire homework assignment
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