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andriy [413]
3 years ago
6

In the number 7,777.777, how does the 7 in the hundreds place compare to the 7 in the place to its left?

Mathematics
1 answer:
Ivahew [28]3 years ago
6 0
B is your answer!
hgfgjdhsghdfg
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A shipment has 22 products, of which 3 are defective. Three people in turn pick up, each person picks up a product at random (no
Alla [95]

Answer:

Probability of no one picking up a defective product = 571 / 1540

Step-by-step explanation:

Total number of items = 22

non-defective items = 22-3 = 19

Probability of all three picking up non-defective products

= 19/22 * 18/21 * 17/20

= 969/1540

Probability of at least one picking up a defective product

= 1 - 969/1540

= 571/1540

(=0.371, approx.)

6 0
3 years ago
Q6. (15 points) IQ examination scores of 500 members of a club are normally distributed with mean of 165 and SD of 15.
melamori03 [73]

Answer:

a) 0.8413

b) 421

c) P_{95} = 189.675

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 165

Standard Deviation, σ = 15

We are given that the distribution of  IQ examination scores is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

a) P(IQ scores at most 180)

P(x < 180)

P( x < 180) = P( z < \displaystyle\frac{180 - 165}{15}) = P(z < 1)

Calculation the value from standard normal z table, we have,  

P(x < 180) = 0.8413 = 84.13\%

b) Number of the members of the club have IQ scores at most 180

n = 500

\text{Members} = n\times \text{P(IQ scores at most 180)}\\= 500\times 0.8413\\=420.65 \approc 421

c) P(X< x) = 0.95

We have to find the value of x such that the probability is 0.95

P( X < x) = P( z < \displaystyle\frac{x - 165}{15})=0.95  

Calculation the value from standard normal z table, we have,  

P(z < 1.645) = 0.95

\displaystyle\frac{x - 165}{15} = 1.645\\\\x = 189.675  

P_{95} = 189.675

8 0
3 years ago
I dont know how to make 0.3 as a fraction and then simplify.
Lapatulllka [165]
0.3 is 3/10, (which is already simplified) because .3 is out of 1.  Which means that that 1 is 10.  Which is 3/10.
7 0
3 years ago
Read 2 more answers
How many whole numbers are there with not more than 4 digits?
Flauer [41]
I think its 1000 numbers because there from 1 to 999 there are 999 numbers, and then you add zero because it is also a whole number. 
7 0
3 years ago
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A store display has 135 shoes made up of running and walking shoes. there are 1.5 times as many pairs of walking shoes as there
vlabodo [156]
About 67 pairs.  one shoe is left over.  walking; 26 pairs  running: about 41 pairs.  sorry if im wrong
5 0
3 years ago
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