Answer:
Standard error = 0.4
Step-by-step explanation:
Step 1
We find the Standard Deviation
The formula = √(x - mean)/n - 1
n = 15
Mean = 1.93 hours
= √(0- 1.93)² + (0-1.93)² +(0- 1.93)²+( 0- 1.93)²+ (1- 1.93)² + (1- 1.93)² +(1 - 1.93)² +(2 - 1.93)² + (2 - 1.93)² + (2 - 1.93)² + (2 - 1.93)² + ( 2 - 1.93)² +(4 - 1.93)² +(4 - 1.93)² + (5 - 1.93)²/15 - 1
= √(3.737777776 + 3.737777776 + 3.737777776 + 0.871111111 +0.871111111 + 0.871111111 + 0.004444444445+ 0.004444444445 + 0.004444444445 + 0.004444444445 + 0.004444444445 + 1.137777778 + 4.271111112 + 4.271111112 + 9.404444446)/15 - 1
= √2.352380952
= 1.533747356
Step 2
We find the standard error
The formula = Standard Deviation/√n
Standard deviation = 1.533747356
n = 15
= 1.533747356/√15
= 1.533747356 /3.87298334621
= 0.39601186447
Approximately = 0.4
Therefore, the standard error is 0.4
Answer:
14.
Step-by-step explanation:
7x2=14
9x2=18
Hey there! :)
Answer:
C. 7 : 18.
Step-by-step explanation:
To solve this, we need to convert each of the measurements given to inches:
2 ft 4 in = 28 inches.
2 yard = 6 feet = 72 inches.
Therefore, expressing this as a ratio would give us:
28 : 72
Simplify by reducing by a factor of 4:
7 : 18. This is the ratio in simplest form.
Answer:
12 = x
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
5m is equivalent to 500cm
500 ÷ 30 = 16.6666666667
= 16
