Three students want to estimate the mean backpack weight of their schoolmates. To do this, they each randomly chose 8 schoolmates and weighed their backpacks. Then as per the given sample data,
(a) The sample means of the backpacks are: 6.375,6.375,6.625
(b) Range of sample means: 0.25
(c)The true statement is: The closer the range of the sample means is to 0, the less confident they can be in their estimate.
For the first sample, mean= 6.375
For the second sample, mean= 6.375
For the third sample, mean= 6.625
Range of sample means=Maximum Mean- Minimum Mean
= 6.625 - 6.375
= 0.25
The students will estimate the average backpack weight of their classmates using sample means, the true statement is:
The closer the range of the sample means is to 0, the more confident they can be in their estimate.
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Yes you are correct
60 * 360 / 40 = 540
X=2 here’s why 90-32 is 58. 29x=58 then x is 2
Answer:
He fails to sell that day 10 cottons.
Step-by-step explanation:
We are given that a cotton candy merchant earns 40 cents for each cotton sold, but if he cannot sell it he loses 50 cents.
One day when he made 120 cottons, he made a profit of 39 soles.
Let the number of cottons merchant is able to sold be 'x' and the number of cottons merchant is not able to sold be 'y'.
So, according to the question;
- The first condition states that he made 120 cottons on one day, that is;
x + y = 120
x = 120 - y ---------------------- [Equation 1]
- The second condition states that merchant earns 40 cents for each cotton sold, but if he cannot sell it he loses 50 cents and due to which he made a profit of 30 soles, that is;


This means that the merchant is not able to sell 10 cottons.
Answer:
It's very simple, all you have to do is round the place that is underlined. So for the first question, 6,9<u>9</u>5,000, the 3rd number there is underlined. (Which is the number 9) So you will have to round to the nearest ten thousand. The answer for number 1 is 7,000,000.
Step-by-step explanation: