Add 3x to 4 a. 7x b. 7 c. 34x d. 4+3x
2 answers:
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Answer:
Binomial; \mu p=87.5, \sigma p=7.542
Step-by-step explanation:
- a distribution is said be a binomial distribution iff
- The probability of success of that event( let it be p) is same for every trial
- each trial should have 2 outcome : p or (1-p) i.e, success or failure only.
- there are fixed number of trials (n)
- the trials are independent
- here, the trials are obviously independent ( because, one person's debt doesn't influence the other person's)
- here n=250
- the probability of success(0.35) is same for every trial
(35/100=0.35 is the required p here)
[since, the formula for ]
[since, the formula for [tex]\sigma _{p} =\sqrt{n*(p)*(1-p)}
- therefore, it is Binomial; \mu p=87.5, \sigma p=7.542
Answer:
No solution
Step-by-step explanation:
Lets consider the equation 2.
Here we multiply the LHS and RHS with (-1).
Hence,
When we add the equations we get,
As 0 doesn't equal to -1, answer is d) No solution