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tia_tia [17]
3 years ago
10

Please help me with questions 6

Mathematics
1 answer:
loris [4]3 years ago
6 0
Since A = bh
and A = 198 and b = 18?
h = A/b
= 198/18
= 11
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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 ,

where (\overline{x}_1-\overline{x}_2) = sample mean difference .

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

SE= Standard error.

Given : (\overline{x}_1-\overline{x}_2)=23

t^*=2.262

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)

Hence, the required confidence interval : (13.4996, 32.5004)

8 0
3 years ago
The graph of y=-3x+ 2 is:
Alexeev081 [22]

Answer:

A

Step-by-step explanation:

This is a linear function whose slope is -3 and whose y-intercept is (0, 2).  Answer A is correct.

5 0
3 years ago
PLEASE SOLVE WILL GIVE BRAINLIEST IF RIGHT
wlad13 [49]

Answer: It would be (3)1

Step-by-step explanation:

3 0
2 years ago
A coin collector is able to collect five coins each day. The collector has five coins on the first day, 10 on the second, 15 on
slavikrds [6]
5 X (number) would be it
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Consider the equation y= -2x -3.
Alona [7]

Part A

The graph is shown below as an attached image.

The diagram shows a straight line that goes through the two points (0,-3) and (1, -5)

I'm using GeoGebra to graph the line.

side note: (0, -3) is the y intercept which is where the graph crosses the y axis.

==================================================

Part B

Answer is choice 2

The graph can be written in the form y = mx+b, so it is linear

In this case, m = -2 is the slope and b = -3 is the y intercept

We can write the slope as m = -2 = -2/1. This tells us that we can move down 2 units and then over to the right 1 units to get from point to point. This process of "down 2, over to the right 1" happens when moving from point A to point B in the diagram below.

7 0
3 years ago
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