Mathematics, 25.09.2019 06:00 punani
Aleading marketing research firm conducted a telephone survey of 500 young adults, 21 years of age, to estimate the average amount of money they intend on spending on political contributions during their first federal election cycle. the data are distributed normally, with the highest amount being $950.00, and the lowest amount being $10.00. the sample mean is $125.00. what is the margin of error (me), rounded to the nearest hundredth, for these first-time voters?
hint: sd equals start fraction x sub h minus x sub l over six end fraction comma where sd is the standard deviation, xh is the high value, and xl is the low value
hint: me equals plus or minus two times start fraction sd over square root of n end square root end fraction comma where sd is the standard deviation and n is the sample size
1. me +- $15.41
2. me +- $139.01
3. me +- $14.01
3. me +- $7.01
Answers: 1
Mathematics, 21.06.2019 17:00
The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?
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Create a question with this scenario you could ask that could be answered only by graphing or using logarithm. david estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x.
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Aleading marketing research firm conducted a telephone survey of 500 young adults, 21 years of age,...
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