Y=mx+b
-3=1(1)+b
-3=1+b
-3-1=1-1+b
-4=b
y=1x-4
Answer:
$26.75 per scarf
Step-by-step explanation:
3 scarves = $80.25 (quite expensive)
1 scarf = $80.25/3
1 scarf = $26.75
Answer:
198 feet per minute
Step-by-step explanation:
8910 feet ÷ 45 minutes = 198 feet per minute
Answer:
27/8
Step-by-step explanation:
3 = 24/8
3/8 + 24/8 = 27/8
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).