Answer: 2.5%
Step-by-step explanation:
Mean score = 65
Standard deviation = 5
Score (x) = >75
Z-score = [(score - mean) ÷ standard deviation]
Z - score = [(75 - 65) ÷ 5]
Z - score = 10 ÷ 5 = 2
P(score higher than 75) = 100 - 95 = 5/2 = 2.5%
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Answer:
Savings of Jeff will be $140.
Step-by-step explanation:
List price of TV = $700
Now, it is given that, this TV is available at 20% off or 20% discount during the President's week.
So, rate of discount = 20%
Now, discount = 20% of $700
= $140
Now, the discount of $140 is the amount of money that Jeff saves if he buys the TV on President's Day.