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vredina [299]
3 years ago
6

3. What methods are you using to test this (or each) hypothesis?. ​

Physics
2 answers:
Gnoma [55]3 years ago
4 0

Answer:

my method is guessing it works 50% of the time :)

Explanation:

Monica [59]3 years ago
4 0

Traditional Method->>>>I'm not 100% sure of my answer but gl buddy

Step 1 Identify the Null Hypothesis and the Alternative Hypothesis

Step 2 Identify α (Level of Significance)

Step 3 Find the critical value(s)

Step 4 Find the test statistic

 For a Proportion: Hand calculation

TI 83/84 – Use 1PropZTest (See Handout H-404)

 For a population mean (with α known):

TI 83/84 - Use Z-Test (See Handout H 404)

 For a population mean (with α Not known):

TI 83/84 - Use T-Test (See Handout H-404)

Step 5 Draw a graph and label the test statistic and critical value(s)

Step 6 Make a decision to reject or fail to reject the null hypothesis

 Reject - The test statistic falls within the critical region.

 Fail to Reject - Test statistic does not fall within the critical

region.

P-Value Method:

<em>P-value is the area determined as follows:</em>

<em> Left Tail Test: p-value is the area to the left of the test statistic.</em>

<em> Right Tail Test: p-value is the area to the right of the test statistic.</em>

<em> Two Tailed Test: p-value is twice the area bounded by the test statistic</em>

<em>Make a decision to reject or fail to reject the null hypothesis:</em>

<em> Reject if p-value ≤ α</em>

<em> Fail to reject if p-value > α</em>

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Stairway must have uniform riser height and tread depth; variations in riser height or tread depth shall not be over _______ inc
alexandr1967 [171]

Answer:

\frac{3}{8} inches

Explanation:

the variations in riser height or tread depth should not be grater than \frac{3}{8} inches that is equal to 9.5 mm but the maximum riser height should be the  \frac{81}{4} inch  but variation in riser height should not exceed to \frac{3}{8} inches. The minimum riser height should be 7 inches which is equal to the 178 mm

5 0
4 years ago
The figure shows three displacement vectors, which are
aleksley [76]

Answer:

the correct answer is D

Explanation:

In this exercise, the vectors are in the same west-east direction, so we can assume that the positive direction is east and perform the algebraic sum.

       R = δ + ε

where

       δ = 2.0 m

       ε = 7.0 m

the positive sign indicates that it is heading east

        R = 2.0 + 7.0

        R = 9.0 m

the direction is east

the correct answer is D

8 0
3 years ago
If you could be the first person to go somewhere where would it be and why??? Example plz
vivado [14]
New York because of the lady of all the people and excitement
3 0
3 years ago
Read 2 more answers
Which friction-reducing technologies are used in the Variable Compression Turbo Engine?
Grace [21]

Friction-reducing technologies used in the Variable Compression Turbo Engine are Diamond-like coating on valve lifters, micro finishing on crankshaft and camshaft and mirror bore coating on cylinder wall.

<u>Explanation:</u>

Variable compression is a technology to adjust the compression of an internal combustion engine while the engine is in operation. At this time friction may occur that need to be reduced. To reduce this friction some technologies are used like

  • Diamond-like coating on valve lifters
  • Micro finishing on crankshaft and camshaft
  • Mirror bore coating on cylinder wall

A hydrogen free diamond like carbon coating is applied to an engine valve lifter to reduce mechanical loss. Micro finishing on crankshaft and camshaft achieves improvement in geometric parameters such as roundness. Mirror bore coating on cylinder wall raises energy efficiency by reducing the friction inside the engine.

4 0
3 years ago
Calculate the KE of a 3.1 kg toy cart that moves at 4.8 m/s. Calculate the KE of the same cart at twice the speed.
lisov135 [29]
When v= 4.8 m/s:

E.K=mv²/2
      =3,1(4.8)²/2
      =35.712J

when v= 2(4.8):

E.K=mv²/2
      =3.1(9.6)²/2
      =142.848J


4 0
3 years ago
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