Engineering, 25.03.2021 08:00, cassiegagnier73
1. In a deck of cards, Kings, Queens and Jacks are called the face cards. If 4 cards are
randomly chosen together, what is the probability that at least one of the cards is a face
card? [Composition of a standard 52-card deck]
2. Suppose, 10 students have been selected for the prestigious Sir Abed Scholarship for
their excellent performances in extracurricular activities and academic results. Letâs say,
there are 4 types of award: A (100% +), B (100%), C (97%) and D (95%) . Also, a
student has an equal chance of getting any of these 4 scholarships. What is the
probability that exactly 4 of the 10 students get A and 3 students get C?
3. Suppose, you are attending an exam where there are 9 multiple choice questions with 3
options in each. A question can have multiple correct answers, and in that case, you
have to check all of the correct answers to get the question right.
a. What is the probability that youâll get exactly 6 of the questions right?
b. What is the probability that youâll get at most 6 of the questions right?
4. What is the maximum number of people in a gathering such that the probability of two
people having the same birthday doesnât exceed 60%?
5. Suppose twin brothers, Lim and Jim are taking part in an experiment called âTwinâs
Telepathy Testâ. In this test, 5 candles of different colors are shown to both the brothers
in the beginning. Then, the twins are put into two different rooms and the candles are
given to Jim. He picks a candle himself, presses a buzzer to let Lim know that one
candleâs been picked without telling him the color of the candle. Then Jim tries to
connect to Lim through his mind and transmit the name of the color to Lim telepathically.
Now, Lim has to guess the color of the candle. This goes on for 5 times for all five
candles.
a. What is the probability that Lim makes exactly 4 right guesses?
b. The same experiment is repeated, but this time after each wrong guess Lim makes,
the correct answer is shown to him. Now what is the probability that Lim makes
exactly 4 right guesses?
6. Suppose there are 8 fair coins and 12 unfair coins in a bag such that the unfair coins
have a 75% probability of landing heads. A coin is randomly picked from the bag and
flipped 9 times. If the coin landed heads 7 times out of 9, what is the probability that the
coin is unfair?
Answers: 2
Engineering, 04.07.2019 08:10, doggo242
Which of the following is an easy way to remember the modified âxâ tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed
Answers: 1
Engineering, 04.07.2019 18:10, genyjoannerubiera
Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)
Answers: 1
Engineering, 04.07.2019 18:20, ashleyjaslin
Derive the correction factor formula for conical nozzle i=-(1+ cosa) and calculate the nozzle angle correction factor for a nozzle whose divergence hal-fangle is 13 (hint: assume that all the mass flow originates at the apex of the cone.
Answers: 3
1. In a deck of cards, Kings, Queens and Jacks are called the face cards. If 4 cards are
randomly c...
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