Statıstıcs II (ENG)
Deneme Sınavı Soruları
- 20 soru
- Cevap anahtarı açık: çöz, sonucunu gör
- 1
How many different samples of size 2 can be created from this population with 7 students?
- 2
Sample values for a continuous variable are as follows (phone charger output voltage ; as volt) : 4.4, 5.6, 4.5, and 5.5. What is the point estimate of the population arithmetic mean?
- 3
In a two population hypothesis testing problem, the alternate hypothesis sign is not equal and the level of significance 0.05, what is the theoretical value of z from standard normal distribution?
- 4
A scientist collects data and finds the arithmetic mean of the data as 23.64. What is the point estimate of the population arithmetic mean?
- 5
How is the power of a statistical test calculated?
- 6
Which is the first step to test the claims made about the population parameters?
- 7
In an investigation, if the significance level is 0.47, what is the confidence level in this study?
- 8
Which sign we are not going to use in one sample hypothesis problems for alternate hypothesis?
- 9
In which of the following sampling methods subgroups occur naturally (such as departments of a company)?
- 10
Which of the following problems requires a two-sided test?
- 11
A survey was conducted on parents’ of 1000 students from 50 schools chosen by a cluster sampling method from among the public, private, and technical high schools in a city. The researchers visited the schools and selected students by using a list of random numbers based on the school’s size.
Which method of sampling is described above?
- 12
In an investigation, if the confidence level is 0,95 ; what is the significance level of this study?
- 13
In which situation below, can hypothesis tests for proportions be used?
- 14
If for 5 population groups their sum of squares between is equal to 48 and the sum of squares within is equal to 19. The total sample size of the groups is equal to 100, then what is the F test statistics?
- 15
Which one of the following is an example of null hypothesis for testing the means of two normal distribution?
- 16
I. Simple Random Sampling
II. Stratified Sampling
III.Convenience Sampling
IV. Quota Sampling
In which of the method(s) above target population is divided into subgroups?
- 17
Which one of the following option is a non-probability sampling method?
- 18
Interval estimation : the limits of the confidence interval are (397, 555), the significance level is 0.05. What is the sample arithmetic mean?
- 19What is the critical value t0 for two-sided test with α = 0.05 and n = 22?
- 20
A person makes an estimation about population parameter and gives a range for the value of the parameter. What kind of estimation procedure is followed in this situation?