the file jtrain2 contains data on a job training experiment for a group of men. men could enter the program starting in january 1976 through about mid-1977. the program ended in december 1977. the idea is to test whether participation in the job training program had an effect on unemployment prob- abilities and earnings in 1978. (i) the variable train is the job training indicator. how many men in the sample participated in the job training program? what was the highest number of months a man actually participated in the program? (ii) run a linear regression of train on several demographic and pretraining variables: unem74, unem75, age, educ, black, hisp, and married. are these variables jointly significant at the 5% level?

The selection of a group of people from a statistical population to estimate attributes of the entire population is known as sampling in statistics, quality control, and survey technique. To gather samples that are representative of the population under consideration, statisticians try to use random sampling.

Given: Take the job training trial with a group of males where individuals could enrol in the programme commencing in January 1976 through around mid-1977. In December 1977, the programme comes to an end. Take into account that the train is the training's indicator variable.

Following are some calculations to determine how many guys in the sample took part in the job training programme:

185 men are accepted into the employment training programme out of the 445 who were supplied. By filtering data, it is provided where

train = 1

24 months was the longest period of time during which the guys took part in job training.

Therefore, the highest number of month’s mostrn for which the men participated in the job training is 24 months.

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