Deneme Sınavı Soruları

20 soru
Cevap anahtarı açık: çöz, sonucunu gör

0 doğru · 0 yanlış · 20 kaldı

1
Which one below is NOT an example of a continuous random variable?
2
Which of the followings cannot be given as an example for random experiments?
3
According to classical probability, when a fair dice is rolled, what is the probability of obtaining a number more than 4?
4
In a study about employess, employees are classified according to the department they work in and their preference of training coursec. If there are 12 different departments and 7 different courses, in how many different ways can an employee be classified?
5
What does a variable's taking on infinite number of possible outcomes in a given interval show?
6
A bakery employs 10 people. The number of years’ experience that the employees of the company have is the following: 0, 0, 2, 4, 5, 8, 15, 17, 20, 24. What is the interquartile range of the data?
7
What is the set for the possible values of the random variable stated below?

"The number of coins that match when three coins are tossed at once."
8
What is range?
9
Consider that continuous random variable X is uniformly distributed and takes values between -5 and b and the mean value of μ = 10. Determine the value of b?
10
I. P(AnB) = P(A⏐B)P(B) this formula is called the multiplication rule.

II. A and B are statistically independent if and only if P(AnB) = P(A)P(B).

III. For A and B sets independence can also be denoted by P(A⏐B)
11
I. The number of people in a mall. II. The speed of a car. III. The exam points of students in a class. Which of the variables above continuous random variable?
12
A shop selling mobile phones has purchased four new mobile phones of the same brand and model. It is known that a mobile phone of this brand and model works without any problem for at least 2 years with probability 0.95. What is the probability that all three mobile phones will work without any problem for at least 2 years?
13
z score of a standard normally distributed random variable Z for value=-a is 0.195. What is P(Z < (-a)) ?
14
The size of a ......I..... is always less than the size of the ......II....... from which it is taken.

Which of the following terms correctly completes the sentence above?
15
What is the level of measurement of times of day as "Dawn, Morning, Noon, Afternoon, Evening, Night"
16
A researcher collects data about the weight of pupils in a school. There are 500 students in that school whose weight differs from 20kgs to 40kgs.

If this researcher wants to constitute a grouped frequency distribution table, what is the class width for this case?
17
We ask the students to number the most important language skill for them in their academic classes as 1 and the least important one as 2. Which option below best describes this measurement?
18
Researchers wanted to evaluate the effectiveness of eKampüs Anadolum system at the end of the semester with a questionnaire. In this questionnaire, students were asked to indicate how often they used the system by marking on the following scale:

(1) none
(2) 1-2 times in the semester
(3) 1-2 times per month
(4) 1-2 times per week
(5) Every day

According to the description given above, what type of question is this?
19
Your professor asked you to write an essay and stated that you would be assessed for the count of words in your essay. What form of numerical data would s/he study on?
20
Which of the following is not variable?

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