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realmofgrads23
05.09.2019 •
Mathematics
In each of the following data sets, tell whether the outlier seems certain to be due to an error, or whether it could conceivably be correct. (a) the length of a rod is measured five times. the readings in centimeters are 48.5, 47.2, 4.91, 49.5, and 46.3.(b) the prices of five cars on dealer's lot are $25,000, $30,000, $42,000, $110,000 and $31,000.
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Ответ:
Step-by-step explanation:
a the errors of a measurement follow a normal distribution, if we find the mean and the corresponding variance we will find that the value 4.91 is very far from the mean, showing that is an error.in b the prices of cars can vary depending of the model of the cars, this prices are taken out of 5 different cars so it's possible for a car to be more expensive.Ответ:
5p + 4c = 20
Step-by-step explanation:
lets have p stand for the number of popcorn we buy and c stand for the number of candy we buy
you can only spend $20, so we know we need to set our equation equal to $20
now we take the price of of popcorn and multiply it p, the number of popcorn we buy. and we can do the same thing with candy.
so we end up with 5p + 4c = 20