What is the sum of the fractions? 3/5+(-7/5)
2 answers:
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Answer:
626,566.42
Step-by-step explanation:
The quotient is answer of a value divided by another value. In this problem we have a value of 1,000,000,000 divided by the product of 28 x 57.
This can be represented like this:
The fraction can also be used to indicate a number being divided by another number.
Answer:
b. 2.333
Step-by-step explanation:
Test if the mean transaction time exceeds 60 seconds.
At the null hypothesis, we test if the mean transaction time is of 60 seconds, that is:
At the alternate hypothesis, we test if it exceeds, that is:
The test statistic is:
In which X is the sample mean, is the value tested at the null hypothesis, s is the standard deviation of the sample and n is the size of the sample.
60 is tested at the null hypothesis:
This means that
A sample of 16 ATM transactions shows a mean transaction time of 67 seconds with a standard deviation of 12 seconds.
This means that
Value of the test statistic:
Thus, the correct answer is given by option b.