Ünite Sınavı Soruları

Interval estimation : the sample arithmetic mean is 14 and the lower limit of the confidence interval is 6, then what is the upper limit of the confidence interval?

What is the indicator of the precision for an estimation of a population parameter with a given sample size and alpha?

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?

Sample values for a continuous variable (rain drop rate ; as kg / hour) : 110, 125, 155, 130, 180, and 80. What is the point estimate of the population arithmetic mean?

In Interval estimation problem : the population standard deviation is not known, the sample standard deviation is 50, there are 25 observations in the sample. What is the value of the standard error to calculate the confidence interval?

In a problem, the population arithmetic mean is estimated via interval estimation, after some calculations, the sample mean is found as 45 and the lower limit of the interval is 40, therefore what is the upper limit of the interval estimate of the population arithmetic mean?

Interval estimation : the sample arithmetic mean is 87 and the lower limit of the confidence interval is 78, then what is the upper limit of the confidence interval?

Sample values for a continuous variable (weather temperature in a day ; as ^oC) : 10, 16, 20, and 28. What is the point estimate of the population arithmetic mean?

There are 28 red apples, 24 green apples, 16 immature apples, 32 red tomatoes, 16 green tomatoes, and 20 immatue tomatoes in a box. What is the population proportion estimate of immature things in this box ?

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?

Interval estimation : the limits of the confidence interval are (99, 123), the significance level is 0.01. What is the sample arithmetic mean?

In an interval estimation problem for population arithmetic mean; z =1.96, population standard deviation =12, n=16 and sample arithmetic mean = 28. What is the upper limit of the confidence interval for population mean?

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?

There are 24 female ducks, 21 male ducks, 15 baby ducks, 27 female gooses, 18 male gooses, and 12 baby gooses in a farm. What is the population proportion estimate of babies in this farm?

What is the female proportion of a sample with 30 males from a group of 120 students? 

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

The frequency of completion of Eskişehir Porsuk river swimming marathon in a sample of 180 is 72. What is the point estimate of population proportion for completion of swimming marathon?

25, 45, 55, 35, 40

What is the estimation of the arithmetic mean of the data set given above?

The frequency of 3 point field goals of a basketball player in a sample of 360 is 216. What is the point estimate of population proportion for 3 point field goals of this basketball player?