b. find a 99% confidence interval estimate of the mean weight of all women
The question is incomplete, complete question is;
Chocos is a dish made from wheat, suguar, and cocoa. Bertha is making a large pot of chocos for a party. Wheat (w) costs $5 per pound, sugar (s) costs $3 per pound, and cocoa (c) costs $4 per pound. She spends $48 on 12 pounds of food. She buys twice as much cocoa as sugar. How much wheat, sugar, and cocoa will she use (in pounds) in her dish?
Answer:
She uses 3 pounds of wheat, 3 pounds of sugar and 6 pounds of cocoa in her dish.
Step-by-step explanation:
Given,
Total amount of spent money = $ 48
Total quantity of ingredients = 12 pounds
Let the quantity of wheat, sugar and cocoa she buys be x, y z pounds respectively.
And according to question, quantity of cocoa is 2 times of sugar.
Now substituting the value of z in equation 1and 2, we get;
Now multiply equation 3 by 5 and then subtract equation 4 from it.
And substituting the value of y in equation 3, we get;
Thus the amount she uses is 3 pounds of wheat, 3 pounds of sugar and 6 pounds of cocoa in her dish.
13
16
19
20.5
23.5
Other:
Answer:
The median of the data in the table is 19.
Step-by-step explanation:
We are given the following data that shows the number of cars Jing sold each month last year below;
Number of cars Jing sold: 13, 16, 19, 20.5, 23.5
For calculating the median, firstly we have to observe that the number of observations (n) in our data is even or odd because;
Median =
Median =
Here, the number of observations in our data is odd, i.e. n = 5.
So, Median =
=
=
= 3rd obs. = 19
Hence, the median of the data in the table is 19.