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The U.S. Department of Education reported that 14% of adults were classi?ed as being below a basic literacy level, 29% were classi?ed as being at a basic literacy level, 44% were classi?ed as being at an intermediate literacy level, and 13% were classi?ed as being at a pro?cient level (2003 National Assessment of Adult Literacy).
a. Is the variable literacy level categorical or numerical?
b. Would it be appropriate to display the given information using a dotplot? Explain why or why not.
c. Construct a bar chart to display the given data on literacy level.
Suppose that 15% of the population is left-handed. If 20 people are selected at random, find the probability that exactly 4 of them are left-handed.
in a study of 420006 cell phone users 164 subjects developed brain cancer. test the claim that cell phone users
Calculate a 3-period moving average for period 7. Compute the MAD of the forecast.
find and attach a cross tabulation of data that is of interest to you. write a question for the following along with
a length of buck antlers is normal distributed with a mean of 1.30 inches and a standard deviation of 0.08 inch. if you
the author recorded actual temperatures along with temperatures that were predicted 5 days earlier. results are listed
For the primary independent variable, at least two research sources that discuss the variable also must be cited. These sources need not be technical documents but should contain evidence to justify the relationship between
For value 10,40,20,50 and 40, value of arithmetic mean is? Simplest measure of dispersion is the Standard deviation, variance, Quartile deviation.
A job placement director claims that the average starting salary for nurses is $24,000. A sample of 35 nurses has a mean of $23,450 and a standard deviation of $400.
on october 22 you plan to purchase a 3000 computer by using one of your two credit cards.the silver card charges 18
an electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed with
Erthromyacine is a drug that has been related with side effects during pregnancy. Assume that 30% of women experience side effects between the 24th and 28th week of pregnancy.
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