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The Weithoff company has a contract to produce 10000 garden hoses for a customer. Weithoff has 4 different machines that can produce this kind of hose. because these machines are from different manufacturers and use differing technologies, their specifications are not the same.
Machine fixed cost variable cost capacity
1 750 1.25 6000
2 500 1.50 7500
3 1000 1.00 4000
4 300 2.00 5000
What is the minimum cost associated with this model?
Data from a National Health Survey show that men's average weight is normally distributed with a mean of 172 pounds and a standard deviation of 29 pounds.
Find the sample size for the 95% confidence interval used to estimate the population proportion.
Assume that female students' heights are normally distributed with a mean given by µ = 67.2 in. and a standard deviation given by σ = 3.6 in.
Descriptive statistics for given data - Evaluate the range, variance, and standard deviation of the data set. Interpret the results in the context of the real-life setting.
Joan's nursery specializes in custom-designed landscaping for residential areas. the estimated labour cost associated with a particular landscaping proposal is based on the number of plantings of trees,shrubs and so on to be used for the project.
A data set comprises of set of numerical values. Which, if any, of the following statements could be right? Point to whether given statement could apply to data set consisting of 1,000 values which are all different.
How much money would a Western household have to spend on groceries per year in order to be at the 99th percentile?
Find the probability that exactly six tickets are written on a randomly selected day from this distribution.
Which is relatively better: a score of 81 on a psychology test or a score of 56 on an economics test? Scores on the psychology test have a mean of 87 and a standard deviation of 9.
The caffeine content of 20 brands of regular coffee is shown below. 80 82 89 85 87 30 33 44 40 46 50 55 60 62 71 90 92 75 63 65. Thus, this job helps to construct a Frequency Distribution with a class interval of 10, starting with 30.
One of 4 bus drivers is also arbitarily selected. Let Y denote number of students on his bus. Caculate expectations of X and Y: E(X)=?
Test the equality of the means of three populations.
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