Mathematics, 24.03.2020 17:34 zahriaarana
According to a survey, high school girls average 100 text messages daily (The Boston Globe, April 21, 2010). Assume the population standard deviation is 20 text messages. Suppose a random sample of 50 high school girls is taken.
a. What is the probability that the sample mean is less than 95?
b. What is the probability that the sample mean is between 95 and 105?
Answers: 2
Mathematics, 21.06.2019 17:30
You can find the constant of proportionality by finding the ratio of
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Mathematics, 21.06.2019 18:30
The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.
Answers: 1
Mathematics, 21.06.2019 19:00
Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =
Answers: 2
According to a survey, high school girls average 100 text messages daily (The Boston Globe, April 21...
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