İST210U

Statıstıcs II (ENG)

2018–2019 Vize (Ara Sınav) Çıkmış Soruları

20 soru
Cevap anahtarı açık: çöz, sonucunu gör

0 doğru · 0 yanlış · 20 kaldı

1
In a systematic sampling study, the size of the population is 1200 and the sample size is 200. What is the value of k for systematic sampling?
2
Which sampling technique allows the researchers to sample a subgroup that is of great interest to the study?
3
Prior to sampling, a sample statistic is called ------- of a population parameter.
Which of the following completes the sentence above?
4
When there are 12 observations on a population and if you want to create all the samples of size 5, how many different samples can you create?
5
Arithmetic mean of all the sample means that can be taken from a population with a fixed sample size n is denoted by -------.
Which of the following completes the sentence above?
6
From a population of size 250, 5 observations are selected randomly. The values of these observations for a variable are 5, 9, 7, 8, and 6. What is the point estimate of the population arithmetic mean?
7
If the population proportion value is 0.40 then what is the value of the standard deviation of the sample proportion if the sample size is 25?
8
Which of the following is the first step of Hypothesis testing?
9
Which of the following is an example of Null hypothesis for the test of arithmetic mean?
10
Which of the following is a more suitable number for type I error?
11
What is the degrees of freedom for Hypothesis testing for the population mean (small sample)?
12
In a hypothesis testing procedure, the population proportion is 0.75 and the sample proportion is 0.85. If there are 40 observations in the sample, what is the observed z value for the hypothesis testing for the population proportion?
13
Which one of the following is an example of alternate hypothesis for two populations?
14
Which one of the following is the test statistic for two sample tests of means when their population variances are known?
15
In a hypothesis testing problem what the shaded area given in the graph is called?
16
If the population variances are assumed to be equal for testing the difference between two population means and the sample sizes are 25 and 42, what is the degrees of freedom?
17
In an investigation, the population proportions of two populations are compared via hypothesis testing. The following statistics are obtained from the samples:
x1 = 25; n1 = 60 ; x2 = 35; n2 = 90
What is the value of
18
What is the name of the technique of selecting items from a population?
19
When there is a time restriction to reach the population, what do a researcher might do?
20
If a researcher uses simple random sampling to create a sample from a population of 25 observations. What is the probability of any observation to be selected in to a sample in this population?

Bir şıkka dokun; doğru cevap hemen görünür.

Yeni yılların sınavlarını da çözStatıstıcs II (ENG) dersinin tüm sınavları, cevap anahtarları, süreli mod ve yanlış analizi uygulamada.Uygulamada aç

In a systematic sampling study, the size of the population is 1200 and the sample size is 200. What is the value of k for systematic sampling?

Which sampling technique allows the researchers to sample a subgroup that is of great interest to the study?

Prior to sampling, a sample statistic is called ------- of a population parameter.

Which of the following completes the sentence above?

When there are 12 observations on a population and if you want to create all the samples of size 5, how many different samples can you create?

Arithmetic mean of all the sample means that can be taken from a population with a fixed sample size n is denoted by -------.

Which of the following completes the sentence above?

From a population of size 250, 5 observations are selected randomly. The values of these observations for a variable are 5, 9, 7, 8, and 6. What is the point estimate of the population arithmetic mean?

If the population proportion value is 0.40 then what is the value of the standard deviation of the sample proportion if the sample size is 25?

Which of the following is the first step of Hypothesis testing?

Which of the following is an example of Null hypothesis for the test of arithmetic mean?

Which of the following is a more suitable number for type I error?

What is the degrees of freedom for Hypothesis testing for the population mean (small sample)?

In a hypothesis testing procedure, the population proportion is 0.75 and the sample proportion is 0.85. If there are 40 observations in the sample, what is the observed z value for the hypothesis testing for the population proportion?

Which one of the following is an example of alternate hypothesis for two populations?

Which one of the following is the test statistic for two sample tests of means when their population variances are known?

In a hypothesis testing problem what the shaded area given in the graph is called?

If the population variances are assumed to be equal for testing the difference between two population means and the sample sizes are 25 and 42, what is the degrees of freedom?

In an investigation, the population proportions of two populations are compared via hypothesis testing. The following statistics are obtained from the samples:

x1 = 25; n1 = 60 ; x2 = 35; n2 = 90

What is the value of

What is the name of the technique of selecting items from a population?

When there is a time restriction to reach the population, what do a researcher might do?

If a researcher uses simple random sampling to create a sample from a population of 25 observations. What is the probability of any observation to be selected in to a sample in this population?