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faltersainse [42]
2 years ago
9

Supongamos que este condicional es verdadero.

Mathematics
1 answer:
lisov135 [29]2 years ago
5 0

YAnswer:

Step-by-step explanation:

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The table below shows the cost for different numbers of tickets.
Black_prince [1.1K]

Answer:

D

Step-by-step explanation: It's not going up by 6 or 2, and it's not going down in numbers, so D

7 0
3 years ago
1/2 added to 1 v equals ​
Mrrafil [7]

Answer:

3/2v

Step-by-step explanation:

v+1/2 is 1.5v or  3/2v.

Hope this helps :D

3 0
2 years ago
A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 335335 babies were​ born
strojnjashka [21]

Answer:

The 99​% confidence interval estimate of the percentage of girls born is (74.37%, 85.63%).

Usually, 50% of the babies are girls. This confidence interval gives values considerably higher than that, so the method to increase the probability of conceiving a girl appears to be very effective.

Step-by-step explanation:

Confidence Interval for the proportion:

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 = 335, \pi = \frac{268}{335} = 0.8

99% confidence level

So \alpha = 0.01, z is the value of Z that has a pvalue of 1 - \frac{0.01}{2} = 0.995, so Z = 2.575.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8 - 2.575\sqrt{\frac{0.8*0.2}{335}} = 0.7437

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8 + 2.575\sqrt{\frac{0.8*0.2}{335}} = 0.8563

For the percentage:

Multiplying the proportions by 100.

The 99​% confidence interval estimate of the percentage of girls born is (74.37%, 85.63%).

Usually, 50% of the babies are girls. This confidence interval gives values considerably higher than that, so the method to increase the probability of conceiving a girl appears to be very effective.

7 0
3 years ago
Lloyd has a PIN number for his bank card.
zhenek [66]

Answer:

6

Step-by-step explanation:

6 is a multiple of three with only itself

3 0
2 years ago
What is the value of y?
Gelneren [198K]

Answer:

try 70

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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