Answer:
(96.91, 101.09)
Step-by-step explanation:
To calculate the interval, you require the Z value at 95% confidence interval. The Z value is 1.96. The formula to calculate the confidence interval:
Where X is the mean and s is the standard deviation and x the sample size:
The interval is (96.91, 101.09)
P / 9 = 72
Multiply both sidess by 9
P / 9 (9) = 72 (9)
p = 648
Answer:
Infinitely many solutions
Step-by-step explanation:
Step 1- Distribute into the parenthesis.
2x+12= 2(x+6)
2x+12= (2)x+(2)6
Step 2- Multiply
2x+12= 2x+12
Since they are equal, they are infinite.
Answer:
9.3
Step-by-step explanation:
Step 1: Calculate. We calculate the square root of 87 to be: √87 = 9.32737905308882.
Step 2: Reduce. 9.32.
Step 3: Round. Round 9.32 so you only have one digit after the decimal point to get the answer: 9.3.
