Joséphine noticed that out of 10 e-mails she
2 answers:
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Answer: 12.10
Step-by-step explanation:
Given : Mean :
Standard deviation :
The formula to calculate the z-score :-
For x= 5 degrees
For x= 10 degrees
The P-value :
In percent ,
Hence, the percentage of days had a low temperature between 5 degrees and 10 degrees = 12.10%
Answer:
p = 8
Step-by-step explanation:
Let one root of the eqn. be alpha . Other root is 1/alpha .
We know that product of both roots of an quadratic eqn. is c/a where "c" is the co-efficient of the constant & "a" is the co-efficient of x^2.
Here "c" is p-4 & "a" is 4. And the product of roots is 1 ( ∵ prdouct of a number and its reciprocal is 1 )