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pickupchik [31]
2 years ago
13

From a sample of 80 batteries, 3 are faulty

Mathematics
1 answer:
andrew-mc [135]2 years ago
5 0

Answer:

sry I just wanted the points I'm in middle school so I don't know this stuff either but can you give free brainlyest I'm soo close to my next rank I'd really appreciate it if you would

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Geometry <br> Find the degree for each angle in the triangle
tino4ka555 [31]

Answer:

acute

Step-by-step explanation:

3 0
3 years ago
Consider the hypothesis test below.
Pavel [41]

Answer:

Z_{H0} =1.79

p-value: 0.0367

Decision: Reject H₀

Step-by-step explanation:

Hello!

Hypothesis to test:

H₀:ρ₁-ρ₂=0

H₁:ρ₁-ρ₂>0

The statistic to use to test the difference between two population proportions is the approximation of Z

Z=<u>     (^ρ₁-^ρ₂)-(ρ₁-ρ₂)     </u>   ≈N(0;1)

   √ (<u>^ρ₁(1-^ρ₁))/n₁)+(^ρ₂(1-^ρ₂)/n₂))</u>

                   

Z=<u>                    (0.28-0.15)-0                    </u>= 1.79

   √ (<u>0.28(1-0.28)/200)+(0.15(1-0.15)/300)</u>

p-value

Remember: The p-value is defined as the probability corresponding to the calculated statistic if possible under the null hypothesis (i.e. the probability of obtaining a value as extreme as the value of the statistic under the null hypothesis).

P(Z>1.79)= 0.0367

Conclusion:

Comparing the p-value against the significance level, you can decide to reject the null hypothesis.

I hope you have a SUPER day!

8 0
3 years ago
Antar is flying a triangular-shaped kite. It has a height of 4 1/2 feet and a base of 5 3/4 feet. What is the area of Antar's ki
kotykmax [81]
Area\ of\ triangle: \\  \frac{1}{2}bh \\  \\  \frac{1}{2}(4.5\ feet)(5.75\ feet) \\  \\ \boxed{12.9375\ feet^{2}}
8 0
3 years ago
Read 2 more answers
ABCDEFGHIJ is a regular decagon.
Vilka [71]

Answer:

hope it helps u..

Step-by-step explanation:

4 0
3 years ago
Find the vertex of " "y = x^2 + 5x+ 4" please show steps as well thanks
zlopas [31]
(x^2 +5x+2.5^2) +4+5

(x+2.5)^2+9

vertex -2.5,9
8 0
2 years ago
Read 2 more answers
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