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larisa86 [58]
3 years ago
7

Me. Jackson order lunches to be delivered to his workplace for himself and some coworkers. The cost of each lunch is $6.25.

Mathematics
1 answer:
larisa86 [58]3 years ago
6 0

Answer:

expression: 6.25(x)+3.50

5 lunches:$34.75

Step-by-step explanation:

6.25(5)= 31.35

31.35+3.50=34.75

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For online courses, like those in eCore, there is a positive correlation between the amount of time spent in the course and the
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Answer:

Regression Line is given by,

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Step-by-step explanation:

The equation of Regression equation is of the form of:

y = a + bx

where, a is intercept and b is slope

The formula for a and b is given by,

a=\frac{\sum Y \sum X^2-\sum X \sum XY}{n\sum X^2-(\sum X)^2}\\ and, b = \frac{n\sum XY -\sum X \sum Y}{n\sum X^2-(\sum X)^2}

Here, ∑X = 1149.8, ∑Y = 377.2, ∑XY = 93115.95, ∑X² = 320246.72

Thus, a = 22.909

and b = 0.209

Thus, Regression Line is given by,

y = 22.909 + 0.209 x

Thus, The course grade of a student in the course who spent an average of 103 minutes in the course each week is: 22.909 + 0.209 × 103 = 44.436

Now plotting these line:

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3 years ago
Please help me this question
postnew [5]
Let's split it into rectange and tringle
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Step-by-step explanation:

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Step-by-step explanation:

When we want to estimate a property of a population (a population's parameter), without surveying the population, we use samples.

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When we talk about confidence intervals, we use the statistic of the sample (in this case, the mean) to estimate a range of values it is expected to find the true mean of the population. The width of this interval depends on the sample standard deviation and the sample size.

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