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Rina8888 [55]
3 years ago
13

canning operation is designed to fill cans with 14.5 oz of ingredients, on average, with a standard deviation of 0.1 oz. Nine ca

ns are selected at random from the process, and the weights of the nine cans averaged 14.52 oz with a standard deviation of 0.075 oz. The standard error of the sample mean is:
Mathematics
1 answer:
Pavlova-9 [17]3 years ago
3 0

Answer:

SE = 0.025

Step-by-step explanation:

We are given;

Sample mean; x¯ = 14.52

Sample standard deviation; s = 0.075

Sample size; n = 9

Now,formula for standard error of sample mean is;

SE = s/√n

SE = 0.075/√9

SE = 0.075/3

SE = 0.025

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Alexxandr [17]

Answer:

-40

Step-by-step explanation:

  1. Negative × positive = negative
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I hope this helps!

8 0
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At a local store, kelly and martin bought some notebooks and pencils. Kelly bought 4 notebooks and 25 pencils for 16.71. Martin
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Let n = cost of 1 notebook
Let p = cost of 1 pencil

Then,

3n + 4p = 8.5
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You can solve for one variable in terms of the other and then substitute into the remaining equation.

3n + 4p = 8.5
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Multiply the top equation by -2 so that the p-containing terms cancel each other out:

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+ 5n + 8p = 14.5
-n + 0 = -2.5

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3n + 4p = 8.5
5n + 8p = 14.5
6 0
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egoroff_w [7]

Answer:

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Step-by-step explanation:

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