Find the standard error, The conservative degrees of

Find the standard error

Reference no: EM137743

1. A researcher wanted to know if the content of television programs has an impact on viewers' recall of ad content. He randomly assigned 108 people to view a program with violent content, and 110 people to view a program with neutral content. The same 9 commercials were inserted into each program. After viewing the program, the subjects were asked to recall the brands advertised in the commercials. The average number of brands recalled for those who saw the violent program was 3.77 with standard deviation 1.87. The average number of brands recalled for those who saw the neutral program was 4.65 with standard deviation 1.67. The standard error for is

A. 0.180.
B. 0.058.
C. 0.240.

2. A researcher wanted to know if the content of television programs has an impact on viewers' recall of ad content. He randomly assigned 108 people to view a program with violent content, and 110 people to view a program with neutral content. The same 9 commercials were inserted into each program. After viewing the program, the subjects were asked to recall the brands advertised in the commercials. The average number of brands recalled for those who saw the violent program was 3.77 with standard deviation 1.87. The average number of brands recalled for those who saw the neutral program was 4.65 with standard deviation 1.67. The conservative degrees of freedom for the t distribution are

A. 107.
B. 109.
C. 217.

3. A researcher wanted to know if the content of television programs has an impact on viewers' recall of ad content. He randomly assigned 18 people to view a program with violent content, and 20 people to view a program with neutral content. The same 9 commercials were inserted into each program. After viewing the program, the subjects were asked to recall the brands advertised in the commercials. The average number of brands recalled for those who saw the violent program was 3.77 with standard deviation 1.87. The average number of brands recalled for those who saw the neutral program was 4.65 with standard deviation 1.67. The t* multiplier for a 95% confidence interval using the conservative degrees of freedom is

A. 2.021.
B. 2.110.
C. 2.093.

Reference no: EM137743

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