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Alexxandr [17]
1 year ago
14

Two companies, A and B, package snack-size bags of cashews. Let X represent the weight of the packages from company A, and let Y

represent the weight of the packages from company B. The mean of X is 2.4 ounces with a standard deviation of 0.3 ounces, and the mean of Y is 1.8 ounces with a standard deviation of 0.5 ounces. Assuming these are independent random variables, which answer choice correctly calculates and interprets the standard deviation of the sum, S = X + Y? Sigma Subscript s = 0.2; companies A and B can expect the total weight of packages to vary by approximately 0.2 ounces from the mean. Sigma Subscript s = 0.34; companies A and B can expect the total weight of packages to vary by approximately 0.34 ounces from the mean. Sigma Subscript s = 0.58; companies A and B can expect the total weight of packages to vary by approximately 0.58 ounces from the mean. Sigma Subscript s = 0.8; companies A and B can expect the total weight of packages to vary by approximately 0.8 ounces from the mean.
Mathematics
1 answer:
Vitek1552 [10]1 year ago
8 0

The answer choice that correctly calculates and interprets the standard deviation of the sum, S = X + Y is D. Sigma Subscript s = 0.8; companies A and B can expect the total weight of packages to vary by approximately 0.8 ounces from the mean.

<h3>What does the standard deviation means?</h3>

A standard deviation means the all measure of how dispersed the data is in relation to the mean. It should be noted that low standard deviation means that the data are clustered around the mean, and the high standard deviation means that the data are more spread out.

In this case, the answer choice that correctly calculates and interprets the standard deviation of the sum, S = X + Y is the sigma Subscript s = 0.8; companies A and B can expect the total weight of packages to vary by approximately 0.8 ounces from the mean.

In conclusion, the correct option is D.

Learn more about standard deviation on:

brainly.com/question/12402189

#SPJ2

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Please Help.
Gennadij [26K]
Answer:
amount of nuts = 2 pounds
amount of dried fruit = 4 pounds

Explanation:
We are given that x is the amount of nuts and y is the amount of dried fruit.
We are also given that:
1- Hunter needs to make 6 pounds of trail mix. This means that:
x + y = 6
This can be rewritten as:
x = 6 - y .........> equation I
2- x costs $4 per pound, y costs $3.5 and Hunter can spend a total of $22. This means that:
4x + 3.5y = 22 ..........> equation II

Substitute with equation I in equation II and solve for y as follows:
4x + 3.5y = 22
4(6-y) + 3.5y = 22
24 - 4y + 3.5y = 22
24-22 = 4y-3.5y
2 = 0.5y
y = 4 pounds

Substitute with y in equation I to get the value of x as follows:
x = 6-y
x = 6-4
x = 2 pounds

Hope this helps :)

7 0
3 years ago
Suppose a polygon has 72 sides. If the polygon is regular, what is its angle of rotation?
satela [25.4K]
The angle of rotation is the minimum angle in which you rotate a regular polygon such that the figure appears unchanged. The formula for that is dividing one angle of revolution by its number of sides.

Angle of Rotation = 360°/n
Angle of Rotation = 360°/72 = 5°
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3 years ago
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Veseljchak [2.6K]

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This is one of the many strategys but there are better ones.
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