3 years ago

Evaluate the expression.

Mathematics

1 answer:

Katarina [22]3 years ago

4 0

Answer:

Step-by-step explanation:

The lines on the outside simply means "absolute value". This just takes any negative number and makes it positive. In this case, 15-4 is already positive so the answer is just positive 11.

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A researcher is interested in testing to determine if the mean price of a casual lunch is different in the city than it is in th

Softa [21]

Answer:

The degrees of freedom for this problem are 21

Step-by-step explanation:

Degrees of freedom:

When testing an hypothesis involving two samples, the number of degrees of freedom is given by:

$df = n_1 + n_2 - 2$

In which $n_1$ is the size of the first sample and $n_2$ is the sample of the second sample.

In this question:

Samples of 9 and 14, so $n_1 = 9, n_2 = 14$

The degrees of freedom for this problem are

$df = n_1 + n_2 - 2$

$df = 9 + 14 - 2 = 21$

The degrees of freedom for this problem are 21

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3 years ago

If a sample of 187 bowlers were taken from a population of 999 bowlers, x could refer to the mean of how many bowlers scores?

Rom4ik [11]

The correct answer is C.<span>

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4 years ago

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On a test, shelly got approximately 93% of the items correct. she got 76 questions right. how many questions were on the test? a

svetlana [45]

You multiply 76 by 0.93. That is 70.68 which rounds to 71. To check, (71/76) = ~93.

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3 years ago

Order from least to greatest 52,701, 54,025, 5, 206

andre [41]

First: 5.

Second: 206.

Third: 52,701.

Fourth: 54,025.

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How many feet can a sloth go in 90 minutes?

tigry1 [53]

Answer:

600

Step-by-step explanation:

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