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blondinia [14]
3 years ago
8

True or false: given a sample mean of 2.1 and a sample standard deviation of 0.7 from a sample of 10 data points, a 90% confiden

ce interval will have a width of 2.36.
Mathematics
1 answer:
iris [78.8K]3 years ago
4 0
Your answer is false.

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The total cost, in dollars, to order x units of a certain product is modeled by C(x)=5x²+320 . According to the model, for what
lora16 [44]

Answer:

The minimum cost per unit is obtained for an order of 8 units.

Step-by-step explanation:

Since the total cost is modeled by;

C(x)=5x²+320

Then;

1 unit costs; C(x)=5(1)²+320 = 325

cost per unit 325/1 = 325

8 units costs; C(x)=5(8)²+320 = 640

cost per unit = 640/8 = 80

80 units costs; C(x)=5(80)²+320 = 32320

Cost per unit = 32320/80 = 404

The minimum cost per unit is obtained for an order of 8 units.

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3 years ago
I will give brainliest for correct answer!
zavuch27 [327]

Answer:

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Step-by-step explanation:

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Solve the formula -8x-3y=-19 for y
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Answer:y = (19 - 8x)/3

Step-by-step explanation:

add 8x to both sides ,

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dividing both sides by -3

y = (19 - 8x)/3

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The cost d of a hotdog is $1 more than half the cost of a sandwich s.
S_A_V [24]

Answer:

$1.50

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The price of the hotdog is $1.50.

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Graph y=-3x+7 on a graph
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Here is the graph equivalent

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