İST209U
İSTATİSTİK I
7. Ünite
Soru 1
Which of the following is a discrete random variable?
Soru 2
What will be the probability P(2.5
Soru 3
What is the mean of variable X, given the probabilty distribution above?
Soru 4
Which one is broadly used in various real life applications especially for acceptance sampling in quality control?
Soru 5
What is mean score?
Soru 6
What is mode?
Soru 7
What is the variance of the probability distribution given above?
Soru 8
Find out the mean score of the following data set: 10,20,40,60,100?
Soru 9
Find out the mode in the following data set: 30, 30, 40,40 50,50,65,65,80,80,80
Soru 10
What must be the value of k if the table above is a probability distribution table of variable X?
Soru 11
What is range?
Soru 12
Find out the range in the following data set: 10,15,20,25,30,35,40,45,50,55,60
Soru 13
Which one can be defined as a rule that assigns probabilities to the values of random variables?
Soru 14
Which one is frequently used to summarize the features of probability distributions for a discrete random variable X?
Soru 15
Which one is a widely employed discrete probability distribution in statistics where a set of independent observations constitutes exactly two disjoint outcomes of a trial?
Soru 16
What must be the value of "a" if the table above is the probability distribution of variable X whose mean is 2.8?
Soru 17
There are 6 red and 4 blue balls in a box. One randomly chooses 4 balls from the box without replacing it. What is the probability of choosing at most 1 red ball out of these 4 balls?
Soru 18
If one wants to model the number of customers entering to a fast food restaurant per hour, which probability distribution should he/she use?
Soru 19
A call center receives, on average, 6 calls per minute and number of calls follows a Poisson distribution. What is the probability of receiving at most 2 calls at a given minute?
Soru 20
What is the probability of flipping a coin 3 times but getting no head at all?