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Oxana [17]
3 years ago
14

Which situation is an example of an observational study?

Mathematics
1 answer:
jarptica [38.1K]3 years ago
8 0

Answer: this is how i feel about the answers A 80% b 0% c 90% d 0%

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Please answer thankssss
dmitriy555 [2]

\frac{7.5*10^{12} }{2.5*10^{4} } =\frac{7.5}{2.5} *\frac{10^{12} }{10^{4} } = 3 * 10^{12 - 4} = 3*10^8

Hope that helps!

8 0
2 years ago
Read 2 more answers
Find the length of arc JL if the radius = 30 cm to the nearest hundredth.
erma4kov [3.2K]

Answer:

4.13

Step-by-step explanation:

5 0
3 years ago
Help! 10 points & Brainliest to correct answer! (I just need a simple answer)
True [87]

Answer:

find the value of the inequality on the number line

Step-by-step explanation:

do open circle for greater or less than

do closed circle for equal to

draw line left or right based on greater or less than

6 0
2 years ago
Read 2 more answers
Using descriptive statistics, you have found out that it takes an average of 40 minutes to complete a mid-term examination in IS
choli [55]

Answer:

b. exam completion time is negatively skewed

Step-by-step explanation:

A data distribution is said to be negatively skewed when <em>median</em> value of the distribution is higher than the <em>average</em> value of the distribution.

In this example

  • average mid-term completion time is 40 minutes  
  • median mid-term completion time is 55 minutes.

thus median > mean, so the mid-term completion time is negatively skewed. Negatively skewed distributions are also called left-skewed.

6 0
3 years ago
Gus is making a Chilli recipe that calls 3 parts beans to five parts ground beef .if he is using 8 cups of ground beef for a big
masya89 [10]
First you need to find the percent equivalent to that of the ratio. The ratio is 3:5. From there you would take the 3, and divide it by 5. 3/5=0.6. Apply that to the information that you are given: 8(0.6)=4.8.
4 0
3 years ago
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