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A survey of the number of calls received by a sample of Southern Phone Company subscribers last week revealed the following information.
52 43 30 38 30 42 12 46 39 37 34 46 32 18 41 5
a) Develop a stem-and-leaf chart. Above for tips on presenting Stem-Leaf plot.
b) What basic conclusions can be drawn from this chart?
c) Compute the 5 number System for this data set and list Xmin,Q1,Q2,Q3 & Xmax. See Videos and show how the pointer was computed for each quartile.
A company is interested in estimating μ, mean number of days of sick leave taken by its employees. The firm's statistician randomly selects 100 personnel files and notes the number of sick days taken by each employee.
Which of the given properties doesn't apply to theoretical normal distribution?
What is the intercept for the logistic regression equation and What is a 95% confidence interval for the odds ratio
Find out the mean, median and mode for the given data
They are thinking of introducing a new flavour, maple-marshmallow Frumpies, and want to know whether children will prefer the new flavour to the old one. Design a completely randomized experiment to investigate this question.
What is the best estimate of the average tread life in miles for the entire population of these tires?
Does the normal distribution yield a good approximation of the actual results?
To recognize the width of the confidence interval.As the confidence level \"1 - α\" increases, the width of the confidence interval.
To find out the test statistics utilizing chi square method. A professional bowler has been having trouble 'hitting the pocket' in order to get strikes.
If the estimate is to be within 8 mpg of the true mean with 98% confidence and the estimated standard deviation is 22 mph, how large a sample size must be taken?
The display represents Excel output for an ANOVA analysis with σ = 0.05.
Using classical methods discussed in class, try to estimate the probability of winning.
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