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Leya [2.2K]
3 years ago
14

In the past, the mean running time for a certain type of flashlight has been 9.2 hours. The manufacturer has introduced a change

in the production method and wants to perform a hypothesis test to determine whether the mean running time has increased as a result. They hypotheses are as follows. Explain a type 2 error.
Mathematics
1 answer:
ELEN [110]3 years ago
6 0

Answer:

what are the hypotheses?

Step-by-step explanation:

you said the hypotheses are as folows its not there

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2.5 + 3(5-2.1p) = -13.37
EastWind [94]

Answer:

2.5 + 3(5-2.1p) = -13.37

2.5+15-6.3p=-13.37

17.5-6.3p=-13.37

-6.3p=-30.87

p=4.9

hope this helps

have a good day :)

Step-by-step explanation:

8 0
3 years ago
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I was super busy today, and didn't have time to finish my math homework. I really hope you guys can help me, as I need the point
ANTONII [103]

Answer:

This isn't really an answer,but I used to use an app called "Photomath" it shows you the answer as well as the work.

Step-by-step explanation:


3 0
3 years ago
34.
poizon [28]

Answer:

The lateral surface area of the triangular prism is 379.5sq units

Step-by-step explanation:

The side lengths of the base of the triangular prism are 5 meters, 8 meters, and 10 meters.

It is given that the height of the prism is 16.5 meters.

To determine the lateral surface area of the prism, let us use the formula  

where a, b,c are the side lengths of the base of the triangular prism and h is the height of the prism.

Here  and  

Substituting these values in the formula, we have,

Simplifying, we get,

Multiplying, we get,

Thus, the lateral surface area of the triangular prism is

6 0
2 years ago
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I just need help in one more ?
Fed [463]
M∠P = 12°
m∠Q = 90°   [A tangent line to a circle is perpendicular to the radius drawn to the tangent point]

m∠O = 90 - 12 = 78°

Answer: x=78°
8 0
3 years ago
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A metal cube contracts when it is cooled. if the edge of the cube is decreasing at a rate of 0.2 cm/hr, how fast is the volume c
aleksandr82 [10.1K]

Answer:

2160 cm³/hour

Step-by-step explanation:

By default, we know that the volume of a cube is given as s³

Thus, the Volume function, V = s³

When we differentiate with respect to time we have

dV/dt = 3s² (ds/dt), where ds/dt = 0.2

Then we go ahead and substitute all the given parameters

dV/dt = 3 x 60 x 60 x 0.2

dV/dt = 10800 * 0.2

dV/dt = 2160 cm³/hour

This means that the volume decreases by a rate of 2160 cm³/hour at the instant its edge is 60 cm

7 0
2 years ago
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