Deneme Sınavı Soruları

According to the given information at Question 7;

What is the calculated test statistics for that hypothesis test?

What is also called availability sampling method?

Which one of the following is a non-probability sampling method?

For α = 0.24 significance level what is the acceptance area under the standard normal curve for two-sided tests?

What is the critical z-value for α=0.05?

Interval estimation problem : the population standard deviation is not known, the sample standard deviation is 28, there are 49 observations in the sample. What is the value of the standard error to calculate the confidence interval?

In _______, every k^th element after a random starting point is taken.

In a two population proportion problem x1 =50; n1=200; x2=120; n2 =400 then what is the value of joint p value?

Which one of the following statements is true about the statistical decision for question 9?

In a research, 5 of 20 schools of university A were selected at random. 2 classes of each of the 5 schools were chosen at random. Then, 3 courses were selected from each class at random. Which type of sampling methods was used in this research?

Which of the following about F Test is true?

In order to use Z test statistic for difference between two means, what is the minimum required sample size?

I. If the alternative hypothesis is in the form of H₁: p1α

II. If the alternative hypothesis is in the form of H₁: p1>p2 then rejection region is z>z_α

II. If the alternative hypothesis is in the form of H₁: p1≠p2 then rejection region is z=z_α/2 

For the given statements about  the hypothesis test of the difference between two population proportions which ones can be said to be true?

For the variance between samples equalling 10 and the variance within samples equaling 20, what is the test statistic for a one-way ANOVA test is the ratio of two variances?

The observed z value is 3.62 and theoretical z value is 1.96, then what is the conclusion for hypothesis testing?

Which one of the following is not a probability sampling method?

Which of the following test is used in case of more than two means of population?

Which one of the following is not a reason of sampling?

A power bank’s charging time is 5 hours. 50 power banks are selected and tested for their charging time. The average charging time of these power banks is 5.05 hours. It’s assumed that the power bank charging time is normally distributed with a standard deviation as σ = 0.2 hours. 

What is the sample size (n) according to the situation above?