You can get the number by dividing 19.2 by 0.40
The number is 19.2/0.40 = 48
10-2/3=9 1/3 if you estimate that it would be 9
next it is 3 - 1/8= 2 7/8 estimate it would be 3
so 9 x 3= 27
Answer:
<u>5-number summary is:</u>
- Minimum = 750
- Maximum = minimum + range = 750 + 2350 = 3100
- Median = 2250
- Q1 = 1500
- Q3 = Q1 + IQR = 1500 + 1150 = 2650
The numbers are added to the box plot.
See attached
10 glasses
Turn (7 1/2) into an improper fraction (15/2)
Find the lowest common denominator (4)
convert 15/2 to 30/4
(30/4) / (3/4)
To solve for the margin of error:
margin of error = critical value x standard error
To compute for the critical value:
1. compute alpha: α= 1 - (confidence level/100) = 1 - .99 = 0.01
2. Find the critical probability: p = 1 - α/2 = 1 - (0.01/2) = 0.995
3. Look for the z score at the z table, in this case it is 2.58. This is your critical value.
To compute for the standard error, the formula is:
standard error = standard deviation (σ) divided by √n = 1.6 / √420 = 0.0781
Now plug in the following in the formula:
margin of error: 2.58 * 0.0781 = 0.2014 or 0.20
The answer is letter C.
