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1. For the following population of N=10 scores 14,6,8,3,9,12,1,6
a) Draw the histogram showing population distributionb) Locate value of population mean in your sketch and make estimate of standard deviationc) Calculate sum of square (SS), variance, and standard deviation for sample.
2. Compute SS, variance and standard deviation for following sample of n=4 SCORES, 4,0,1,1, (NOTE: computational formula works well with there scores).
A sample proportion is calculated from a sample size of 394. How large of a sample would we need in order to decrease the standard error by a factor of 9?
There are 5,000,000 Adults 25+ in Mtown. An advertiser buys a schedule on Channel 45: 20 spots in early news with an average A25+ quarter hour audience of 150,000, 25 spots in daytime with an average A25+ quarter hour audience of 200,000, and 10 s..
What is the intercept for the logistic regression equation and What is a 95% confidence interval for the odds ratio
A company auditor was interested in estimating the total number of travel vouchers that were incorrectly filed. In a SRS of size n =50 oft of the group of N = 250, were filed incorrectly.
Critically illustrate out the properties of a normal distribution. Explain why there are an infinite number of normal distributions.
What is an example of a directional alternate hypothesis? What is an example of a non-directional alternate hypothesis?
A population is normally distributed, with a mean of 23.45 and a standard deviation of 3.8. What is the probability of each of the following?
When is it important to have matched pairs rather than two independent sets of data?
95% confidence interval evaluate for proportion of Americans who believe Abraham Lincoln is United States' most outstanding President is 65% to 75%. If more precise estimate is requested, then confidence level.
The probability of an randomly selected person quits a team is 0.125. Assume the team has n members. Determine the smallest n that the team needs to have if the probability of the team has at least 20 members left is 0.9.
Illustrate what does weighting add to usefulness of moving averages and explain how is it done. The yield on a thirty year treasury note at the end of every year since 1990 is recorded below.
Determine the probably of selecting a female or an accounting major? Which rule of addition did you apply?
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