Mathematics, 30.12.2021 03:50, simran922
A person read that the average number of hours an adult sleeps on Friday night to Saturday morning was 7.2 hours. The researcher feels that college students do not sleep 7.2 hours on average. The researcher randomly selected 15 students and found that on average they slept 8.3 hours. The standard deviation of the sample is 1.2 hours. At a =0.05, is there enough evidence to say that college students do not sleep 7.2 hours on average?
Answers: 1
Mathematics, 21.06.2019 15:30, yourgirlnevaeh
Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81
Answers: 2
Mathematics, 21.06.2019 18:30, rheamskeorsey33
Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?
Answers: 1
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