_ sampling is defined as sampling where we know the chance that each element in the
population will be included in the sample.
The central limit theorem states that as the sample size increases the distri
The study for this week discussion purpose was the result of marriages based on if they started dating
online or met in person. The study figured out if marriages were more likely to last longer if the couple
met online or offline. The study also figured
To construct a frequency polygon, we plot points above each class midpoint at the height equal
to the frequency of the class
A distribution that is mound shaped and has right and left tails that are mirror images of each
other is said to be symm
The Crown Bottling Company has just installed a new bottling process that will fill 22-ounce bottles of the popular Cro
drink. Both overfilling and underfilling bottles are undesirable: Underfilling leads to customer complaints and overfillin
A wholesaler has recently developed a computerized sales invoicing system. Prior to implementing this system, a manu
The distribution of the number of errors per invoice for the manual system is as follows:
Errors per Invoice
Percentage of Invoices
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Thirty percent of all customers who enter a store will make a purchase. Suppose that six customers enter the store and
customers make independent purchase decisions.
(1) Use the binomial formula to calcul
For each of the following situations, find an interval that contains (approximately or exactly) 99.73 percent of all the pos
In which cases must we assume that the population is normally distributed? Why?
(a) = 10, = 2, n = 25. (Round your answer
Week 1 home work
Explain the difference between a census and a sample.
: examine all of the population units.
: subset of the units in a population.
Below we list several variables. Which of these variables are quantitative and which a
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Lauren is a college sophomore majoring in business. This semester Lauren is taking courses in accounting, economics
information systems, public speaking, and statistics. The sizes of these classes are, res
Answer the following question as a conversation in this post ( title your post with your last name):
A. Suggest at least five ways statistics can be used in everyday life to make decisions. Select
one and fully describe the situation. This situation may b
Chapter 3 Connect Notes
The sample _ is the average of the sample measurements. Answer=mean
For a set of measurements arranged in increasing order, the pth percentile is a value such that p
percent of the measurements are _ the value. =Answer: less than o