StudyDaddy Statistics Please provide tutoring steps on solving these types of problems.

Please provide tutoring steps on solving these types of problems.

Q5

Please provide tutoring steps on solving these types of problems. 1

Using the data from Q5, what is the standard error of difference scores between pre- and post-tests?

a. 

0.4

b. 

0.5

c. 

0.6

d. 

0.7

See Example 7.18 on page 263.

You may use R code:

x <-c(2, 2, 0, -1, 3, 1)

mean(x)

sd(x)

sd(x)/sqrt(6)  #standard error(SE); n=6

Using the data from Q5, what is the T-score (test statistics) for the paired-sample t-test?

a. 

1.94

b. 

1.96

c. 

1.76

d. 

2.01

See Example 7.18 on page 263.

You may use R code:

x <-c(2, 2, 0, -1, 3, 1)

mean(x)

sd(x)

SEdiff <-sd(x)/sqrt(6)  #SE

(mean(x)-0)/SEdiff     #t-value

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