Jakob wants to invite 20 friends to his birthday, which will cost his parents $250. If he decides to invite 15 friends instead,
2 answers:
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Answer:
a)3
b) 9
c) -3
Step-by-step explanation:
a) If B is obtained by adding a multiple of a row of A to another row of A,
Then, .
b) If B is obtained by multiplying a row of A by k, then . Then
c) If B is obtained by exchanging two rows (columns) of A, then . Then
The score of 96 is 2 standard deviations above the mean score. Using the empirical rule for a normal distribution, the probability of a score above 96 is 0.0235.
Therefore the number of students scoring above 96 is given by:
Therefore the number of students scoring above 96 is given by: