What number plus 1.2 equals -1.8 ?
2 answers:
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Answer: 19.77%
Step-by-step explanation:
Given: Mean :
Standard deviation :
The formula to calculate z-score is given by :_
For x= 80, we have
The P-value =
In percent ,
Hence, the approximate percentage of the test scores during the past year exceeded 80 =19.77%
Answer:
<h2>Option 2 is the right answer.</h2>Step-by-step explanation:
We need to check if the two characteristics, <u>having blue eyes and being deaf are independent of each other or not</u>.
The above two characteristics will be independent if
Now, the probability of having blue eyes is .
The probability that the Dalmatians will be deaf is .
The probability of being deaf with blue eyes is .
Since, 38 is not equals to 42, the two characteristics are not independent.