This question is incomplete, in that the Excel File: data07-11.xlsx a. was not provided, but I was able to get the information on the Excel File: data07-11.xlsx a. from google as below:
57 61 86 74 72 73
20 57 80 79 83 74
The image of the Excel File: data07-11.xlsx a. is also attached below.
Answer:
a) Point estimate of sample mean = 68
b) Point estimate of standard deviation (4 decimals) = 17.8122
Step-by-step explanation:
a) Point estimate of sample mean, \bar{x} = ∑Xi / n = (57 + 61 + 85 + 74 + 73 + 72 + 20 + 58 + 81 + 78 + 84 + 73)/12 = 68
b) Point estimate of standard deviation = sqrt ∑ Xi² - n\bar{x}² / n-1)
= sqrt(((57 - 68)^2 + (61 - 68)^2 + (85 - 68)^2 + (74 - 68)^2 + (73 - 68)^2 + (72 - 68)^2 + (20 - 68)^2 + (58 - 68)^2 + (81 - 68)^2 + (78 - 68)^2 + (84 - 68)^2 + (73 - 68)^2)/11) = 17.8122
Multiply the change per hour by the number of hours:
3.5 degrees per hour x 2.5 hours = 8.75
Since the temperature dropped, the change would be a negative value.
The change was -8.75 ( -8 3/4) degrees.
1. LI = 12
2. TV = 8.75, X = 9.75
3. No, it would be if AD = 15, DB = 12 and AE = 10, EC = 8.
4. No, CE needs to = 1/2 of AE, not 1/3.
5. Yes, DB and EC are each 1/3 of AB and AC.
6. X = 15
7. X = 9
8. X = 8
We are given: Barrel quantity averages = 50 pounds.
Crate quantity = 120 pounds.
Number of barrels is taken by variable x and
Number of crates is taken by variable y.
The elevator load should be greater than of total load.
Therefore,
50 * number of barrels + 120 * number of crates > Total load.
50*x +120*y > Total load.
50x +120y > total load.
9514 1404 393
Answer:
- $304
- $91.83
Step-by-step explanation:
1. The finance charge is found from the simple interest formula;
I = Prt
where P is the principal amount, r is the annual rate, and t is the number of years.
24 months is 2 years, so the interest charged is ...
I = $1900×0.08×2 = $304
The finance charge is $304.
__
2. The monthly payment will be the total amount due, divided by the number of months.
payment = ($1900 +304)/24 = $2204/24 ≈ $91.83
The monthly payment is $91.83.