2+2 Help please i really need it

Mathematics

2 answers:

Dafna11 [192]2 years ago

3 0

Answer: 4

Step-by-step explanation:

babunello [35]2 years ago

3 0

4 I’m only answering this so I can ask a question

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N + 3.5 = 6.7<br> I need help badly plz

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Answer:

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. An investigator measuring various characteristics of a large group of athletes found that the correlation between the weight o

velikii [3]

Answer:

Step-by-step explanation:

Given that an investigator measuring various characteristics of a large group of athletes found that the correlation between the weight of an athlete and the amount of weight that athlete could lift was 0.60.

Correlation coefficient is the measure of association and a positive value implies that increase in one value causes increase in the other.

Hence out of the given options correct ones are

c) The more an athlete weights, on the average the more he weights.

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2 years ago

"There are 15 questions on an exam. In how many ways can the exam be answered with exactly 8 answers correct?"

erastovalidia [21]

Answer:

The exam can be answered with exactly 8 answers correct in 6435 ways.

Step-by-step explanation:

The order is not important.

For example, answering correctly the questions 1,2,3,4,5,6,7,8 is the same outcome as answering 2,1,3,4,5,6,7,8. So we use the combinations formula to solve this problem.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.