Mathematics, 27.04.2021 14:50 briashia
The average lifetime of circulated $1 bills is 18 months. A researcher believes that the average lifetime is not 18 months. He researched the lifetime of 50 $1 bills and found the average lifetime was 18.8 months. The population standard deviation is 2.8 months. At a 2% significance level, can it be concluded that the average lifetime of a circulated $1 bill differs from 18 months
Answers: 1
Mathematics, 21.06.2019 12:50
In the final round of trivia competition, contestants were asked to name as many states that begin with the letter m as they could in 15 seconds. the bar graph shows the number of states the contestants were able to name. how many contestants participated in the final round of the competition?
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Mathematics, 21.06.2019 15:00
Idonβt understand this.. will someone ? will mark brainliest along with 20 points.
Answers: 2
Mathematics, 21.06.2019 21:00
Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?
Answers: 2
The average lifetime of circulated $1 bills is 18 months. A researcher believes that the average lif...
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