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3 years ago

PLEASE HELP ME ASAP!!!!!????

Mathematics

1 answer:

Elan Coil [88]3 years ago

3 0

I think it’s number one ??????

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Mark and his friends are out at Applebee’s. Their bill totaled 52.35. If they left the server a 20% tip, how much would each per

otez555 [7]

52.35 * 20% = 10.47

52.35+10.47 =62.82 total bill plus tip

62.82/ by number of people (this piece is missing)

4 0

3 years ago

When utilizing ANOVA, what does the between group sum of squares measure?

zhenek [66]

Answer:

b. The sum of the squared deviations between each group mean and the mean across all groups

Step-by-step explanation:

Previous concepts

Analysis of variance (ANOVA) "is used to analyze the differences among group means in a sample".

The sum of squares "is the sum of the square of variation, where variation is defined as the spread between each individual value and the grand mean"

Solution to the problem

If we assume that we have $p$ groups and on each group from $j=1,\dots,p$ we have $n_j$ individuals on each group we can define the following formulas of variation:

$SS_{total}=\sum_{j=1}^p \sum_{i=1}^{n_j} (x_{ij}-\bar x)^2$

$SS_{between}=SS_{model}=\sum_{j=1}^p n_j (\bar x_{j}-\bar x)^2$

$SS_{within}=SS_{error}=\sum_{j=1}^p \sum_{i=1}^{n_j} (x_{ij}-\bar x_j)^2$

And we have this property

$SST=SS_{between}+SS_{within}$

As we can see the sum of squares between represent the sum of squared deviations between each group mean and the mean across all groups.

$SS_{between}=SS_{model}=\sum_{j=1}^p n_j (\bar x_{j}-\bar x)^2$

So then the best option is:

b. The sum of the squared deviations between each group mean and the mean across all groups

5 0

3 years ago

Help again pleaseeeeeee

lisabon 2012 [21]

Ok so we have the parabola at origin of y=-12 and crosses x-axis at points x=1,8 so, we could just look at where it crosses the x-axis and find it directly from there. it crosses x-axis at 1 and 8 so the answer can only be A to fit this criteria

4 0

4 years ago

Read 2 more answers

Which table has a constant of proportionality of 8/5

Fudgin [204]

Sorry there’s no info here

8 0

4 years ago

Sienna was dividing 12.76 by 0.001.

Solnce55 [7]

Sienna was dividing 12.76 by 0.001.Let's find out which one is correct based on the given choices. Let's perform division
=> 12.76 / 0.001 = 12 760

Thus, the correct answer is B. It will be less than 13,000.

8 0

3 years ago