Mathematics, 29.01.2021 01:00 Emiliano15
you are interested in estimating the mean age of the citizens living in your community. in order to do this, you plan on constructing a confidence interval; however, you are not sure how many citizens should be included in the sample. if you want your sample estimate to be within 3 years of the actual mean with a confidence level of 94%, how many citizens should be included in your sample? assume that the standard deviation of the ages of all the citizens in this community is 21 years.
Answers: 2
Mathematics, 21.06.2019 18:30
Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.
Answers: 3
Mathematics, 21.06.2019 21:00
You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds.then use the distributive property and mental math to evaluate the expression.
Answers: 2
Mathematics, 21.06.2019 22:30
One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?
Answers: 1
you are interested in estimating the mean age of the citizens living in your community. in order to...
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