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Bess [88]
3 years ago
10

A manufacturer knows that their items have a normally distributed length, with a mean of 19.3 inches, and standard deviation of

4 inches. if 18 items are chosen at random, what is the probability that their mean length is less than 18.3 inches
Mathematics
1 answer:
Scrat [10]3 years ago
8 0
Dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd
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What is the arithmetic mean for the following numbers,88,80,75,70,38,45,70,60,60,50​
Natalija [7]

Answer:

63.6

Step-by-step explanation:

X=£fx/n

= 88+80+75+70+38+45+70+60+60+50/10

= 636/10

= 63.6

Mark me as Brainliest.

Please feel free to ask if you have any questions.

Thanks

5 0
2 years ago
PLEASE HELP!! DUE SOON :( Question: Find the value of x.
Harrizon [31]

Answer:

Ooh man, this was back in geometry I think, I think the answer is 4 if my calculations are correct.

i think the bigger side is twice the size of the smaller side, so 2 times 8 is 16,

16 = 5x - 4

x = 4

5 0
3 years ago
Complete the factorization of 3x ^ 2 - 10x + 8 3x^ 2 -10x+8=(x- Box x-4)
aniked [119]

Answer:

3x^2-10x+8=(x-x_1)(x-x_2)=(x-2)(x-\frac{4}{3})

Step-by-step explanation:

The general form of a quadratic polynomial is given by:

ax^2+bx+c    (1)

You have the following polynomial:

3x^2-10x+8    (2)

In order to complete the factorization you can use the quadratic formula, to obtain the roost of the polynomial. The quadratic formula is given by:

x_{1,2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}    (3)

By comparing the equation (1) with the equation (2) you obtain:

a = 3

b = -10

c = 8

Then, you replace these values in the equation (3):

x_{1,2}=\frac{-(-10)\pm \sqrt{(-10)^2-4(3)(8)}}{2(3)}\\\\x_{1,2}=\frac{10\pm2}{6}\\\\x_1=2\\\\x_2=\frac{4}{3}

Then, the factorization of the polynomial is:

3x^2-10x+8=(x-x_1)(x-x_2)=(x-2)(x-\frac{4}{3})

5 0
3 years ago
HELP WORTH 25 POINTS question:
Grace [21]

the 6 is the 6  x's that is in the diagram

4 0
3 years ago
Find the 62nd term of the arithmetic sequence -27, -21, -15, ...
kaheart [24]

Answer:

a = -27

d = -21 - ( -27) => 6

a62 => a + 61 (d) +=> -27 + 61(6)

=> -27 + 366

=> 339

5 0
3 years ago
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