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Standard deviation is a measure of variability so lower standard deviation means more consistency. In statistics, the symbol for population standard deviation is the Greek lowercase letter sigma. Knowing that sigma means standard deviation, a measure of variability, can anyone name a popular quality control program in a lot of industries today that focuses on reducing variability in processes?
Calculate 95% and 99% confidence intervals for m. Using the 95% confidence intervals, can we be 95% confident that m is a least 50 pounds? Explain.
question rivets used to secure the stainless steel sheet metal of aircraft wings are designed to withstand certain
Standard deviation of $45. What is the probability that a randomly selected elementary school teacher earns more than $525 a week?
zingos grocery store claims that customers spend an average of five minutes waiting for service at the stores deli
Which of the following is a correct statement about a probability? A. It may range from 0 to 1. B. It may assume negative values. 1. Which of the following is a correct statement about a probability?
Calculate the dollar ending inventory if first in, first out (FIFO) is used. Calculate the cost of goods sold if LIFO is used.
Find or create a data set that would allow you to explain what is meant by mean, median and mode. Make sure to also show any calculations or formula necessary. Describe or provide as much information on the data set as possible.
Give 99% confidence interval for mean number of years general managers of major-chain hotels have spent with their current company.
Kannon Camera has developed a new camera that it claims can take an average of more than 10 photographs per second. You decide to evaluate the company's claim.
in a learning experiment untrained mice are placed in a maze and the time required for each mouse to exit the maze is
Suppose you want to test the null hypothesis, H0: μ=48, using a sample of n=70 cable shoppers. Find the p-value of a two-tailed test if x=49.1 and s=6.8.
if the test statistic for a small sample difference of means test is t 2.045 we could reject the null hypothesis at
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