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A population is normally distributed with mean 50 and standard deviation 10 and sample mean 50. What are the mean and variance of the distribution of means?
You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. If convenien..
a sample of 200 smokers were asked at what age they started smoking. the sample mean was 18.3 years with a standard
A sample of 16 batteries reveals a mean of 3.45 years and a standard deviation of 0.3 years. Find a 95% confidence interval for the population mean.
consider n independent flips of a coin having probability p of landing on heads. say that a changeover occurs whenever
There is thought to be a relationship between a persons' educational attainment and the number of children he or she has. The hypothesis is that as one's educational level increases, he or she has fewer children.
1. each supplier is rated on a 10-point scale 10 highestfor four different criteria price quality delivery and
Looking for 1-2 paragraphs per question with explanations and an example to help illustrate them. I get the basic idea of each question, but I would like something more illustrative to nail down the topics
Explain a few of the following on whatever topic you choose: decision tree, decision stragety, probability, forecasting, linear programming as it relates to work, life or interset.
Temperature is used to measure the output of a production process. When the process is in control , the mean of the process is 128.5 and the standard deviation is 0.4
Find the Celsius temperature(to the nearest degree when Fahrenheit temperature is 9 degrees by solving the equation 59= 9/5 C +32, where F is the Fahrenheit temperature (in degrees and C is the Celsius temperature.
Describe what happens when the sample standard deviations get smaller and discuss the effects of decreasing the sample size
Bay area community college (BACC) has collected data comparing the starting salaries of their graduating students with last names beginning with the letters A through M with those whose last names begin with N through Z.
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