Deneme Sınavı Soruları

Suppose that random variable X has exponential distribution with λ=a. Find the probability of P (X ≥ b) ?

Random variable X has normal distribution, mean μ=25 and variance σ²=16. Determine the probability P (30 ≤ X ≤ 35) in terms of standard normal distribution?

Study the following discrete probability distribution:

According to table what is the probability that the result is equal to 2 or less?

Which of the following can be categorized as a discrete random variable?

A box contains 10 glasses : 4 red and 6 blue. Two glasses are selected randomly, without replacement, from this lot. What is the probability that the first selected glass is blue?

Data : 20, 12, 16, 12, 10 ; what is the Pearson’s coefficient of skewness of these data ?

Which class interval does contain the median?

For X which is a continuous random variable that is uniformly distributed and takes values between 3 and 9. What is the mean of the random variable X ?

When is A and B, which are any two events in a random experiment with sample space S, can be said to be mutually exclusive?

During a festival, the five bar tenders in the festival area sold the following number of beers in three days : 9540, 3600, 5566, 12345 and 8745. What is the range of the beers sold during the festival? 

We know that event B has occurred and we are interested in finding the probability of event A. In other words, we are interested in finding the probability of A knowing that event B has occurred. Which of the following formula denotes the probability? We know that event B has occurred and we are interested in finding the probability of event A. In other words, we are interested in finding the probability of A knowing that event B has occurred. Which of the following formula denotes the probability?

Which of the statements below are correct?

I In classical probability, all the outcomes have the same chance of happening.

II In empirical probability, the experiments are repeated many times and the observed outcomes of the event we are interested in is counted.

III When it is not possible to observe the outcomes of events, the researcher applies the researcher assigns a suitable value as the probability of the event.

IV It is not appropriate to use personal judgement to assign the probability.

What will be the probability P(2.5

The figure above is a dot plot showing Mathematics grades in class A by gender. Which of the statements is not correct depending on the information above?

Which of the following is a newborn concept relative to others in statistics?

The frequency distribution table of the students’ performance scores of a school were constructed as follows. What is the ratio of the students whose score under 80?

The data on weight distribution of a certain group of men is given on the table above. What is the mean weight for this group?

Which of the following is preferably used to visualize a trend of continuous data over time?

1. Blood pressure
2. A verbal response
3. Number of supermarket visits
4. Purchased products
5. Course grade

Which of the above are statistical variables?

Which one below is one of the limitations of interview method?