Deneme Sınavı Soruları

In a factory there are 10,000 workers. %70 of workers are male. If we make a random sample of 200 proportional to the gender, how many of sample points should be female?

Which of the following can be the null hypothesis?

Interval estimation : the limits of the confidence interval are (49.6, 50.4), the significance level is 0.01. What is the sample arithmetic mean?

A survey to search out the preferences of teenagers in Istanbul about novel selection was conducted accordingly: 80 girls and 80 boys, aged between 14-18, were asked the same questions such as the last novel they read, etc. For the design of the study, which is a wrong statement?

Sample values for a continuous variable (electric voltage at home ; as volt) : 204, 214, 226, 234, and 242. What is the point estimate of the population arithmetic mean?

For Group 1 and Group 2 data that are normally distributed, and the population variances are not equal, we can we conclude that there is a the mean of Group 1 is greater than the mean of Group 2. What is the alternative hypothesis? 

In a two population hypothesis testing problem, if you draw the normal distribution with critical values, what do we call the inside of the critical values?

"In _________________ sampling method, the members, who are identified previously, are asked to identify other members of the population. As newly identified members name others, the sample is getting larger." Which of the following completes the blank in given sentence?

For the one-way ANOVA test, the test statistic is the ratio of two variances: namely the variance between _______ and the variance within ________. 

Which option completes the blanks above?

In a problem, the variance between samples is 200 and the test stastic F is 2. What is the variance within samples?

what is the total size of the rejection region in hypothesis testing?

An agricultural engineer wants to determine whether there is a difference in the mean yield of three different agricultural ingredients to increase the mean yield of a certain produce in a decares. What is the null hypothesis? 

A researcher wants to conduct a survey on the mathematics scores of the Turkish students in Turkey. Which of the following can not belong to the sample choosen for this survey?

What is the sample proportion of a sample with frequency (f) 450 and sample size (n) 9000?

In a sample there is 45 people and 25 of them are female, what is the point estimate of the population proportion of females?

Systematic sampling : sample size is 1024, number of members in the population is 16, random starting point is 257. What is the order of  the 3rd sample point?

In poin estimation, What is sample statistic called for population parameter?

How many different samples of size two can be created from this population with 6 students when the sample size is 3?