Answer:
The standard deviation for each group is obtained by dividing the length of the confidence interval by 3.92, and then multiplying by the square root of the sample size: For 90% confidence intervals 3.92 should be replaced by 3.29, and for 99% confidence intervals it should be replaced by 5.15.
Answer:
Step-by-step explanation:
slope m = (y₂ - y₁)/(x₂ - x₁)
= 6-6 / 8 - (-5) = 0/ 8+5 = o
Slope = o. ie the line is parallel to the x-axis.
Answer:
6 2.83
4 2
Step-by-step explanation:
Answer:
No, a unit rate is a rate for one quanity such as 1 drink for 0.75 cents.
Step-by-step explanation:
Answer:
1240 students.
Step-by-step explanation:
There are 558 girls and 682 boys