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Lunna [17]
2 years ago
11

Consider 8x-4 = 8^10

Mathematics
1 answer:
Arte-miy333 [17]2 years ago
8 0
Sorry I just need some points I’d love to help but I’m on here the same reason u are lol
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A science teacher wrote the table of values below.
Umnica [9.8K]
C. f(x)= log 1/x^2 , c=/ 0

5 0
3 years ago
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In any 15-minute period in a statistics class, the probability of observing at least one mistake made by professor Doe is 5%. Wh
777dan777 [17]

Hey there!

We can set this up a proportion to figure out the percent we need.

\frac{mins}{percent} = \frac{15}{5} =\frac{60}{p}

If you can see, the second numerator is four times the first. So, we multiply the bottom by four and we get 20.

Therefore, the probability if observing at least one mistake made by this professor is 20%.

I hope this helps!

3 0
3 years ago
The weights of newborn baby boys born at a local hospital are believed to have a normal distribution with a mean weight of 3958
Gwar [14]

Answer:

0.8413 or 84.13%

Step-by-step explanation:

The difference from 4320 grams from the mean is:

d=4320-3958=362\ grams

This is exactly 1 standard deviation.

According to the empirical rule, 68.26% of all data is within 1 standard deviation of the mean, which means that 34.13% of all data is within the mean and 1 standard deviation over the mean. We also know that the mean is at the 50th percent of the normal distribution.

Therefore, the probability that the weight will be less than 4320 grams is:

P(X\leq 4320) = 0.50+0.3413=0.8413 = 84.13\%

The probability is 0.8413 or 84.13%

5 0
3 years ago
Classify the triangle by its angles and sides. Explain how you knew which classifications to use
Ronch [10]

Answer:

can i see a pic

Step-by-step explanation:

5 0
2 years ago
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As part of a project about response bias, Ellery surveyed a random sample of 25 students from her school. One of the questions i
vazorg [7]

Answer:

a. We are 90% sure that the mean GPA for all students at her school is between 3.14 and 3.52.

b. The length would increase.

c. The interval would be narrower.

d. The biggest potential source of bias is making the students state their grades aloud, which makes it possible that students with low grades could lie their grades, making it seem higher, and the interval biased.

Step-by-step explanation:

x% confidence interval:

A confidence interval is built from a sample, has bounds a and b, and has a confidence level of x%. It means that we are x% confident that the population mean is between a and b.

Margin of error of a confidence interval:

M = z\frac{\sigma}{\sqrt{n}}

In which z is related to the confidence level(higher the confidence level, higher z) \sigma is the standard deviation of the population and n is the size of the sample.

This shows that if we increase the confidence level, the margin of error gets larger and the interval gets wider, while if we increase the sample size the margin of error gets smaller and the interval gets narrower.

a. Interpret the confidence level.

We are 90% sure that the mean GPA for all students at her school is between 3.14 and 3.52.

b. Explain what would happen to the length of the interval if the confidence level were increased to 99%.

We would increase the confidence level, and the interval would get wider, that is, the length would increase.

c. How would a 90% confidence interval based on a sample of size 200 compare to the original 90% interval?

Larger sample size means that the interval would be narrower.

d. Describe one potential source of bias in Ellery's study that is not accounted for by the margin of error.

The biggest potential source of bias is making the students state their grades aloud, which makes it possible that students with low grades could lie their grades, making it seem higher, and the interval biased.

8 0
3 years ago
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