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Here are some shopping times (in minutes) for a sample of 5 shoppers at a particular shoe store: 22,33,43,21,31. Find the standard deviation of this sample of shopping times. Round your answer to at least two decimal places.
an electronic switching device occasionally malfunctions and may need to be replaced. the device is considered
Compute the 95% confidence interval on the population mean if a sample of 1000 is taken and the sample mean is found to be 15.95 and standard deviation is 4.2.
the tensile strength of paper is modeled by a normal distribution with a mean of 35 pounds per square inch and a
50524846325147205349the following random sample of annual salaries was recorded. units are in thousands of dollars.
giving a test to a group of students the grades and gender are summarized
How have statistics been used inappropriately and what are some examples of when you have seen or heard statistics used inappropriately?
Discuss how scale impacts the interpretation of a graph and name the lowest number of a statistically significant sample size and state the statistically appropriate percentage total of displays
a) Construct a double stem-and-leaf diagram for these data. b) Find the sample mean, sample median, and sample standard deviation for these data.
Describe the statistical method used in the cited research studies. Summarize results, limitations of results, conclusions, and applications.
Construct a 95% confidence interval for the mean HAV angle in the population of all such patients and construct a histogram and assess the shape, center, and spread. Remove the patient(s) that who are outliers.
Three colors have been proposed for a product: blue, green, yellow. The null hypothesis for a goodness-of-fit test would be.
a quality-control technician must select a sample of 10 dresses from a production lot of 74 couture dresses. how many
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