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You survey a sample of 10 college students to measure their racial prejudice using a scale of 0 (no prejudice) to 100 (extreme prejudice). Here are the scores you obtained.
10 43 30 30 45 82 12 26 24 35
Compute the mode, median, mean, and standard deviation for this sample. Is there a skew; and if so, is it positive or negative? What does this skew reveal about the dispersion in the sample.
In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the following data have been gathered.
The margin of error for a 95% confidence interval estimate for the proportion of all students with cell phones is
Suppose that the number of babies born during an hour at a hospital's maternity wing follows a Poisson distribution with a mean of 4 per hour.
Use the above information to calculate the number of watches (units) and the sales dollars we need in order for our flea market business to break even for the day.
The proportion of adults in the sample, as her estimate of p, the proportion of adults in the pond population. Find using the normal approximation with the continuity correction.
Using historical records, the personnel manager of a plant has determined the probability distribution of X, the number of employees absent per day. Calculate the mean of the population.
What does the intercept mean in this context? What is the estimated percent decline in visual field per year?
What is the probability that he or she is a Coalition voter (rounded to 3 decimal places)?
List the sample space in S and determine the number simple events. What is the probability that the sum of the numbers shown on the upper faces is equal to 7?
It is estimated that the probability that the general population will live past their 85th birthday is 5.4%. Use the standard normal distribution to approximate this Binomial problem and answer the following questions.
Determine the expected market return on $ 20,000 if the expected return on asset is 20%, its beta is 1.5, and the risk free rate is 5 percent?
Determine a 90% confidence interval estimate of the mean head circumference of all two-month-old babies.
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