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laila [671]
3 years ago
12

Please help! And 20 points! :3

Mathematics
2 answers:
Goshia [24]3 years ago
6 0

Answer:

1. 42 quarts. Since there are 2 pints in a quart, we simply have to divide the 84 pints sold by 2, and we'll get the amount of quarts sold.

2. 6 pounds. There are 16 ounces in a pound, so we have to divide the 96 into by 16, and the amount left is how many pounds the package is.

3. 5 kilometers. There are 1000 meters in a kilometer, so divide the 5000 by 1000, and that's how many kilometers there are in 5,000 meters

timofeeve [1]3 years ago
3 0
1. 42 quarts
2. 6 pounds
3. 2.008 kilometers
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One hundred items are simultaneously put on a life test. Suppose the lifetimes
romanna [79]

Answer:

a) \mathrm{E}[\mathrm{T}]=\sum_{\mathrm{H}}^{5} \frac{200}{101-i}

b) \mathrm{Var}[\mathrm{T}]=\sum_{k=1}^{5} \frac{(200)^{2}}{(101-i)^{2}}

Step-by-step explanation:

Given:

The lifetimes of the individual items are independent exponential random variables.

Mean = 200 hours.

Assume, Ti be the time between ( i-1 )st and the ith failures. Then, the T_{i} are independent with \mathrm{T}_{\mathrm{i}} being exponential with rate \frac{(101-i)}{200} .

Therefore,

a) E[T]=\sum_{i=1}^{5} E\left[\tau_{i}\right]

=\sum_{i=1}^{5} \frac{200}{101-i}

\therefore \mathrm{E}[\mathrm{T}]=\sum_{\mathrm{H}}^{5} \frac{200}{101-i}

b)

The variance is given by, \mathrm{Var}[\mathrm{T}]=\sum_{i=1}^{5} \mathrm{Var}[T]

\therefore \mathrm{Var}[\mathrm{T}]=\sum_{k=1}^{5} \frac{(200)^{2}}{(101-i)^{2}}

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4 years ago
Zahir made this wooden perch for his pet bird. What is the volume of the bird perch? Round to the nearest tenth if necessary.
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Answer:

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Step-by-step explanation:

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3 years ago
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Neither of them are correct. When you plug in both of the fractions into the equation, you get answers like 2/9 (from plugging in 1/3) and 1/9 (from plugging in 1/6). None of them are equal to 9.
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Answer:

C

Step-by-step explanation:

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3 years ago
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3 years ago
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