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vlada-n [284]
3 years ago
7

Simplify: 5¹c²c³c⁴ ​

Mathematics
1 answer:
Alchen [17]3 years ago
3 0
The answer is 5c^10__________
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A random sample of 60 suspension helmets used by motorcycle riders and automobile race-car drivers was subjected to an impact te
pentagon [3]

Answer:

The 95% confidence interval on the true proportion of helmets of this type that would show damage from this test is (0.169, 0.397).

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}.

For this problem, we have that:

n = 60, \pi = \frac{17}{60} = 0.283

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:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.283 - 1.96\sqrt{\frac{0.283*0.717}{60}} = 0.169

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.283 + 1.96\sqrt{\frac{0.283*0.717}{60}} = 0.397

The 95% confidence interval on the true proportion of helmets of this type that would show damage from this test is (0.169, 0.397).

6 0
3 years ago
Me pueden ayudar con este ejercicio 3+(-2)x8
Marina86 [1]
Using pemdas, it is -48
5 0
3 years ago
What is the mean to this
ValentinkaMS [17]

Answer:

44.8

Step-by-step explanation:

4 0
3 years ago
Which of these groups of relative frequencies would be best represented by a pie chart?
Nonamiya [84]

Answer:

B.25%; 70%; 5%

Step-by-step explanation:

Other options have % very close to eachother, pie chart may not reflect the difference

4 0
3 years ago
Which numbers are the extremes of the proportion shown below
Svetllana [295]

Answer:

3 and 8 are the extremes of the given proportion (first listed answer option)

Step-by-step explanation:

In a proportion of the type:

\frac{A}{B} =\frac{C}{D}

the values "A" and "D" are called "extremes of the proportion, while "B" and "C" are called the "means" of the proportion.

This comes from writing it as:   A : B = C : D

where we observe that A and D are the more "extreme" values being further away from the equal sign than the quantities B and C which are more towards the middle (center of the proportion).

So in your case, the numbers 3 and 8 are the extremes

6 0
3 years ago
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