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olya-2409 [2.1K]
3 years ago
11

The weight of bags of coffee beans at the grocery store follows a Normal distribution with a mean of μ = 7 ounces and a standard

deviation of σ = 2 ounces. Suppose we pick four bags of coffee beans at random from the shelf and find their total weight, W. Which of the following statements describes the random variable W?
A. The random variable W is Normal, with a mean of seven ounces and a standard deviation of two ounces.
B. The random variable W is Normal, with a mean of 28 ounces and a standard deviation of 16 ounces.
C. The random variable W is Normal, with a mean of 28 ounces and a standard deviation of four ounces.
D. The random variable W is binomial, with a mean of 28 ounces and a standard deviation of four ounces.
E. The random variable W is binomial, with a mean of seven ounces and a standard deviation of two ounces.
Mathematics
1 answer:
aleksley [76]3 years ago
4 0

Answer:

C.

Step-by-step explanation:

The random variable W is Normal, with a mean of 28 ounces and a standard deviation of four ounces.  

mean of total = 7+7+7+7 = 28

Variance of total = 4+4+4+4 = 16

SD of total = sqrt(16) = 4

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tatiyna
Mary has 10 yards She used 2 yards:
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3 years ago
Solve each system of equations using the substitution method
Galina-37 [17]

Step-by-step explanation:

Riverside Bakery charges $2 for each cupcake, plus $59 for the large cake.

The Sweet Shoppe charges $38 for the large cake and $3 for each cupcake.

(riverside)

$59 + $2(30) =$119

(sweet shoppe)

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3 0
3 years ago
Are braces are used in interval notation or roster notation?
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7 0
3 years ago
You borrow $2250 at 4.8% compounded weekly for tuition. While you do not have to make payments for the 5 years that you are in s
Cloud [144]

Answer:

432

Step-by-step explanation:

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4 0
3 years ago
1 point
pshichka [43]

Answer:

96 yards

Step-by-step explanation:

This is basically just a huge addition problem that we can tackle (heh) in our heads.

If we gain yards, then we add.

If we lose yards, then we subtract.

If we started out at 50, the expression is

50 + 7 + 2 - 1 + 4 - 5 + 27 + 4 + 5 + 0 + 3 - 2 - 1 + 1 + 2.

We can use the associative property of addition to simplify this. I'm just grouping together things that look easy to do in my head.

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Hope this helped!

3 0
3 years ago
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