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slavikrds [6]
3 years ago
14

I do not understand numbers 3 and 4

Mathematics
1 answer:
Margaret [11]3 years ago
8 0
3. jenny has 21 years old

and matthew  is 42


4.juan has 48 years oldand his  sister has 40
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The two cones below are similar. What is the height of the larger cone?​
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Step-by-step explanation:

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Given a sample mean difference of 23, a standard error of 4.2, and a critical t value of 2.262, what are the values for the conf
erastova [34]

Answer: (13.4996, 32.5004)

Step-by-step explanation:

The confidence interval for mean difference is given by :-

(\overline{x}_1-\overline{x}_2)\pm t^*\times SE ,

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t^*= critical t value (two-tailed)

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SE= 4.2

Now, the confidence interval for mean difference will be :-

23\pm (2.262)\times (4.2)\\\\= 23\pm9.5004\\\\=(23-9.5004,\ 23+9.5004)\\\\=(13.4996,\ 32.5004)

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3 years ago
Which net represents this box?​
timofeeve [1]

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Step-by-step explanation:

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3 years ago
What is most likely the correlation coefficient for the set of data shown shown
satela [25.4K]

Answer:

C) 0.19

Step-by-step explanation:

A correlation coefficient is a measure of how well the line of best fit fits the data.  The higher the correlation coefficient, up to 1.0 or -1.0, the better the fit. A positive correlation coefficient means an increasing data set, while a negative correlation coefficient means a decreasing data set.

We can see that this line of best fit is increasing, so our correlation coefficient will be positive.

However we can also see that the points are fairly scattered; this means this is not a very good fit.  This means that 0.19 is the better fit.

6 0
3 years ago
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