900/12= 75
780/12= 65
75+65=140
The answer is a
Answer:
The 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 is (-8.04, 0.84).
Step-by-step explanation:
The (1 - <em>α</em>)% confidence interval for the difference between population means is:

The information provided is as follows:

The critical value of <em>z</em> for 98% confidence level is,

Compute the 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 as follows:


Thus, the 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 is (-8.04, 0.84).
When x=1 and -2 so it is C
A year has 12 months so 1 month = 1/12 year. t = 3 months = 3/12 year = 1/4 year
The term of humanism has been very different back during reinasance humanism and modern humanism.
Back then, the term is used to describe an act to preserve intellectual culture. In modern times, it used to describe the act to impose social justice among all human.