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1. A small college has 500 Freshmen, 400 Sophomores, 350 Juniors, and 300 Seniors. They wish to conduct a survey of their students and find a simple random sample of 50 Freshmen, 40 Sophomores, 35 Juniors, and 30 Seniors. The overall sample isA. a stratified sample.B. a simple random sample.C. a multi-stage sample.
2. In a controversial election district, 73% of registered voters are Democrat. A random survey of 500 voters had 68% Democrats. Are the bold numbers parameters or statistics?A. Both are statistics.B. 73% is a parameter and 68% is a statistic.C. 73% is a statistic and 68% is a parameter.
3. Which sample size will give the least bias to a statistic?A. n = 100B. n = 500C. We don't know.
Fip it 20 times and if it lands heads 17 times or more then the referee will designate that coin as the weighted one. a) If the coin the referee selects is fair, what is the probability that it gets designated as being weighted?
The bank credit card department of Carolina Bank knows from experience that 5 percent of the card holders have had some high school, 15 percent have completed high school, 25 percent have had some college
One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations and variances of X and Y.
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.
A senior accounting major at Midsouth State University has job offers from four CPA firms. To explore the offers further, she asked a sample of recent trainees how many months each worked for the firm before receiving a raise in salary.
Find the probability that the mailed item was First Class or it went to a home.Find the probability that the mailed item was an Ad.
Tthe amount is approximately normally distributed with a mean of 16 and a standard deviation of 1.5. What percent of the cups will have 15 oz or fewer?
Do these simulated data provide evidence for us to conclude that a difference in the spinal canal cross sectional area exist between the population of subjects with disc hernination and a population of those who do not have disc hernation?
How does hypothesis testing contribute to the scientific knowledge base? What is one example of a null hypothesis statement?
A human society claims that less than 36% of US. households own a dog. In random sample of 397 U. S. households, 151 say they own a dog. At mean=0.03, is there enough evidence to support the society's claim?
At most, only 30 newspaper ads are possible. For every 106.7 radio ad, there must be at least two 103.1 Radio ads. Formulate the LP model to determine the number of ads in each outlet and maximize the effective audience contact.
For these 4 questions below what would be the independent and dependent variables, the level of measurement and whether or not the variable is discrete or continuous.
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