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makkiz [27]
2 years ago
7

25 points!!! And brainliest!!! In an archery competition, one of the targets is created using round board with congruent square

holes. What is the probability that an arrow shot within the round target will go through one of the four holes. Round to the nearest tenth of a percent.

Mathematics
1 answer:
8090 [49]2 years ago
4 0

How big is the target in compound archery?

The target in a compound event is set at 50 metres. The target face is 80cm in diameter with the innermost 10-point ring 8cm in diameter. A barebow is the most primitive form of bow in archery, with archers allowed no stabilisers or sight pins to shoot at their targets.

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Step-by-step explanation:

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Read 2 more answers
(9x + 25) (13x - 19) (17y + 5)
quester [9]

Answer:

1989xsquared y + 585xsquared+ 2618xy + 770x - 8075y - 2375

Step-by-step explanation:

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2 years ago
4. According to statistics reported on IN-CORP a surprising number of motor vehicles are not covered by insurance. Sample result
son4ous [18]

Answer:

a) 0.23

b) The 95% confidence interval for the population proportion is (0.1717, 0.2883).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

Point estimate

The point estimate is:

\pi = \frac{46}{200} = 0.23

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

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The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.23 + 1.96\sqrt{\frac{0.23*0.77}{200}} = 0.2883

The 95% confidence interval for the population proportion is (0.1717, 0.2883).

5 0
3 years ago
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