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Novay_Z [31]
3 years ago
13

A process has been developed that can transform ordinary iron into a kind of super iron called metallic glass. Metallic glass is

three to four times stronger than the toughest steel alloys. To estimate the mean temperature, μ, at which a particular type of metallic glass becomes brittle, 25 pieces of this metallic glass were randomly sampled from a recent production run. Each piece was subjected to higher and higher temperatures until it became brittle. The temperature at which brittleness first appeared was recorded for each piece in the sample. The following results were obtained: x = 480°F and s = 1 10F. Construct a 95% confidence interval to estimate Lu
Mathematics
1 answer:
beks73 [17]3 years ago
6 0

Answer:

Step-by-step explanation:

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Well in my calculations I got: well if you he increases the speed by 2.6 per hour soo 4+2.6=6.6
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3 years ago
Can someone explain this and help me with the answer?
GenaCL600 [577]

Answer:

Distributive Property, Subtraction Property of Equality, Subtraction Property of Equality, Division Property of Equality

Step-by-step explanation:

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Klio2033 [76]
Here are the calculations for Super Sport:

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3 years ago
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Marianna [84]

Answer:

d

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7 0
3 years ago
A bag contains 6 red balls numbered 1, 2, 4, 5, 8, 9 and 4 white balls numbered 3, 6, 7, 10,
geniusboy [140]

Answer:

60%

a. 80%

b. 70%

Step-by-step explanation:

In this case we are first asked for the probability that when drawing a ball at random it is 8, 9 and 4 white balls numbered 3, 6, 7, 10, that is 6 balls. We know that there are a total of 10 balls since they are 6 red and 4 white, 6 + 4 = 10.

Therefore the probability is:

6/10 = 0.6

that is to say that the probability that it is one of these balls is 60%

to. that is red or odd,

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8/10 = 0.8

In other words, the probability is 80%

b. white or even,

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the probability is:

7/10 = 0.7

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6 0
3 years ago
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