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Masteriza [31]
2 years ago
12

when 30 bolts are tested for hardness, their indexes have a standard deviation of 3.9. Test the claim that the standard deviatio

n of the hardness indexes for all such bolts is 6.1. use a 0.01 level of significance.
Mathematics
1 answer:
HACTEHA [7]2 years ago
5 0

Answer:

nebraskan Vulunnter na bumaril sa tatlong piliponong sundalo na siyang naging hudyat ng digmaan

Check your spelling or try different keywords

Ref A: D4EA49C383DC4782B921C6733B0FE57B Ref B: SG1EDGE0220 Ref C: 2020-12-08T02:28:46Z

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The terminal ray of angle A passes through the point (- 4, - 6)
kow [346]

Answer: -√13/3

Step-by-step explanation:

I answered wrong on my test this was the answer

5 0
2 years ago
Can someone solve these please using the formula AB | a - b |<br><br> And can you show work
Lana71 [14]

Answer: 1) AC = 13

The formua does not actually apply to all of the problems.

Step-by-step explanation:

1) The absolute value of -8 is added to the absolute value of 5. 8+5=13

2) Subtract the length of the EF from EG to get the length of FG 21 -6 = 15

3) Take what's given and create an equation to solve. 4x + 15 +39 =110. 4x = 110 - (15+39).

4x =110-54. 4x =56. x=56/4. x=14

4) Create another equation. You have two segments that add up to the length of EG, given =23

EF+FG=EG

(2x-12)+(3x-15)=23

5x - 27 = 23

5x= 23+27 5x =50. x = 10

Substitute 10 for x

EF=2(10) -12 EF=8

FG=3(10)-15. FG=15

EF+FG =EG.

8 + 15 = 23

5) 2/5 of 25 is 10 So EF is 10. Subtract from 25 to get FG

FG = 15

I hope this helps you.

4 0
3 years ago
LAST ONE !!! Ok here
spin [16.1K]

Answer:

Market economy

Step-by-step explanation:

Once again this is because they are changing their prices and items for sale because of the changes in market.

7 0
3 years ago
Suppose that we were going to conduct a study to determine if there is an decrease in risk of getting lung cancer based on wheth
nalin [4]

Answer: Option C

Step-by-step explanation:

In group(1), the risk is= 5/2000 x 100

                          = 0.25

In group(2), the risk is= 5/1000 x 100

                         = 0.5

The sample relative risk is= 0.25/0.5

                                          = 0.5

So, option C is correct.

7 0
3 years ago
Kelsey had $65 to spend on books. Each book cost $5.50, and there was a $7.50 fee for shipping. She let b equal the number of bo
xeze [42]

Answer: Kelsey had $65 to spend on books. Each book cost $5.50, and there was a $7.50 fee for shipping. She let b equal the number of books she can purchase

Step-by-step explanation:

3 0
1 year ago
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