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lilavasa [31]
1 year ago
6

Which two of the following are assumptions made when using a two sample test of means with equal standard deviations?

Mathematics
1 answer:
valina [46]1 year ago
4 0

When using a two sample test of means with equal standard deviations, then T distribution is the best option for it.

Sample test:

Sample test refers a method of reaching a conclusion to reject or support the claims based on sample data.

Given,

Here we need to identify in which  of the following are assumptions made when using a two sample test of means with equal standard deviations.

While we looking into the options for this one, then we have identified that, the sampling distribution of the difference of means is a T distribution.

So, the populations have equal but unknown standard deviation's.

Therefore, we "pool" the sample standard deviation.

To know more about Sample test here.

brainly.com/question/13201390

#SPJ4

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Pleaseeee help me....Use the Law of Sines to solve the triangle. Round your answers to two decimal places.
alexira [117]

Answer:

  • a = 1.11
  • B = 105.4°
  • c = 2.95

Step-by-step explanation:

B = 180 -A -C = 105.4 . . . . sum of angles in a triangle is 180°

__

The missing side lengths can be found from the Law of Sines:

  a/sin(A) = c/sin(C)

  a = c·sin(A)/sin(C) = 2.46·sin(21.2°)/sin(53.4°) ≈ 1.11

Likewise, ...

  b = c·sin(B)/sin(C) = 2.46·sin(105.4°)/sin(53.4°) ≈ 2.95

7 0
3 years ago
There are 4 boxes of cookies each box holds 8 cookies how many childrrn can be served 2 cookies each
REY [17]
The answer would be 16.
 

you have to multiply 4 and 8 which =32 and then divide 32 by 2 which =16
6 0
4 years ago
Read 2 more answers
You make punch for a party. The ratio og ginger ale to fruit juice is 8 cups to 3 cups. You decide to add 4 more cups of ginger
Dvinal [7]
To get the answer we can use proportion
8 ginger ----------------- 3 fruit
12 ginger ----------------x
Crossmultiply now
8x=12*3                /:8
x=\frac{12*3}{8}
x=<u />\frac{36}{8}  \\ x=4.5
To not change ratio we have to have 4.5 cups of fruilt juice. We initialy had 3, so we have to add 1.5 cup of fruit juice.
7 0
3 years ago
If Colorado spring, Colorado, has 1.2 times as many days of sunshine as Boston, Massachusetts, how many days of sunshine does ea
Crank
C= Colorado B= Boston
C + B = 464
C = 1.2B
Substitute the known value of C from the second equation into the first
C + B = 464
(1.2B) + B = 464
2.2B = 464
Divide each side by 2.2
B = 210.9, rounded to 211 (it's asking for days, not partial days, so round)
If Boston has 211 days of sunshine , then Colorado Springs has 1.2 times that amount. 211 * 1.2 = 253.2 (rounded to 253)
Verification
211 + 253 = 464
3 0
3 years ago
The ball used in a soccer game may not weigh more than 16 ounces or less
Liono4ka [1.6K]
In order for the ball to be used in the game, it must be able to meet the minimum and maximum weight requirements. These are the limits of the weight of the ball. If it exceeds the maximum limit of 16 ounces or below the minimum limit of 14 ounces, the ball will not be approved.

So, by adding 1.5 ounces, that would mean that the initial weight of the ball did not reach the minimum limit. The initial weight of the ball, denoted as x, have two possible values. The first value is the initial weight plus added with 1.5 ounces would reach 14 ounces.

x + 1.5 = 14
x = 12.5 ounces

The other scenario is when the initial weight is added to reach the maximum requirement of 16 ounces

x + 1.5 = 16
x = 14.5 ounces

From both answer, we could conclude that the initial weight has to be 12.5 ounces. If the initial weight were 14.5 ounces to begin with, there should be no need for air. It cans till be approved to be used.
3 0
3 years ago
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