Mathematics, 13.11.2019 00:31, andreamartinez375
The the communications regulator of a certain country released a report refuting an earlier report released by the same regulator. the new report indicates that cable subscribers would save as much as 10% on their cable tevision bils. t average monthly cable prices in the country were estimated to be $31.41. typically, such reports announce a margin of error o say $1.23 and a confidence evel o 90%. suppose the standard deviation of the monthly cost of cable television bills was $11.00. complete parts a through c below. a. determine the sample size of the new study released by the regulator. the sample size is round up to the nearest whole number as needed.) b. calculate the sample size required to decrease the margin of error by a dollar. the sample size requiredis (round up to the nearest whole number as needed.) c. a typical sample size used in national surveys in the country is 1,700 to 2,300. determine a range for the margin of error corresponding to this range of sample sizes. the range for the margin oferror is from $1040 (round up to the nearest cent. use ascending order.)
Answers: 1
Mathematics, 22.06.2019 01:30, peterradu47781
Talia grouped the terms and factored out the gcf of the groups of the polynomial 15x2 – 3x – 20x + 4. her work is shown below. (15x2 – 3x) + (–20x + 4) 3x(5x – 1) + 4(–5x + 1) talia noticed that she does not have a common factor. what should she do?
Answers: 1
Mathematics, 22.06.2019 02:00, georgesk872
Look at the example below which shows how the product property of radicals is used to simplify a radical. use the product property of radicals to simplify the following radical.
Answers: 3
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