SAT, 06.12.2020 18:00 Frostbite9371
A survey of 49 people revealed that the mean number of minutes a person talks on his or her wireless phone in one day in a particular locality is 26, with a standard deviation of 2.3. Give a 99% confidence interval for the average daily usage. (Hint: 2.3 is the sample standard deviation, s).
Answers: 1
SAT, 24.06.2019 04:30
What percentage of the earth's water is available for use by living things?
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SAT, 25.06.2019 06:50
Heights of men on a baseball team have a bell-shaped distribution with a mean of 177 cm and a standard deviation of 6 cm. using the empirical rule, what is the approximate percentage of the men between the following values? a. 159 cm and 195 cm b. 165 cm and 189 cm a. 89% of the men are between 159 cm and 195 cm. (round to one decimal place as needed.) b. 89% of the men are between 165 cm and 189 cm. (round to one decimal place as needed.)
Answers: 3
A survey of 49 people revealed that the mean number of minutes a person talks on his or her wireless...
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