10. How many 3-digit passwords are possible if digits can be repeated?
A) 720
B) 729
C) 1000
D) 120
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17. Ahmad says:" my relative position in Math exam is higher than my relative position
in History exam ". Which of the following z-score values are correct?
A) z-score of Math = -1.5 and z-score of History = -1.5
B) z-score of Math = -1.5 and z-score of History = -1.2
C) z-score of Math = -1.2 and z-score of History = -1.5
D) None of the above
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32. The average repair cost of a microwave oven is $55, with a standard
deviation of $8. The costs are normally distributed. If 12 ovens are repaired, find the
probability that the mean of the oven repair will be greater than $60.
A) 0.015
B) 0.4850
C) 0.2643
D) 0.985
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38. How many times a die is rolled when the mean for the number of 3's that will be
rolled=60?
A) 20
B)
1
6
C) 360
D) 10
ياليـــت الي يعرف طريقة حل يساعدني :)
اعرف أنو الأسأله كثيره شوي بس مره محتاجه
مساعدكــم لاني ماعرفت أحلهـاا :(