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nikklg [1K]
3 years ago
12

A manufacturing firm just received a shipment of 20 assembly parts, of slightly varied sizes, from a vendor. The manager knows t

hat there are only 15 parts in the shipment that would be suitable. He examines these parts one at a time. a. Find the probability that the first part is suitable. (Round your answer to 2 decimal places.) Probability b. If the first part is suitable, find the probability that the second part is also suitable. (Round your answer to 4 decimal places.) Probability c. If the first part is suitable, find the probability that the second part is not suitable. (Round your answer to 4 decimal places.) Probability
Mathematics
1 answer:
Marat540 [252]3 years ago
4 0

Answer:

a. 0.75

b. 0.5526

c.  0.1974

Step-by-step explanation:

Probability is typically expressed as a fraction where the numerator is the number of desired outcomes and the denominator is the total number of outcomes. In this case the suitable parts is the desired outcome and the total shipment is the total parts:

\frac{suitable}{total}=\frac{15}{20}=\frac{3}{4}=0.75

The probability the both the first and second part are suitable:

\frac{15}{20}*\frac{14}{19}=\frac{210}{380}=0.5526

Since the probability of getting a suitable part the first time is 15/20, then there is one less suitable part and one less part overall to choose on the second time, or 14/19.

Lastly, the probability of choosing a suitable part the first time is again 15/20, but the second part not being suitable would be 5/19:

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11.717, 11.771, 11.117, 11.171 greatest to least
matrenka [14]

Knowing the value of each digit, we can arrange them from greatest to least like so:

11.771 > 11.717 > 11.171 > 11.117


3 0
3 years ago
Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 10 17 6 33 Female 11 15 13 39
Akimi4 [234]

Answer:

1 / 12

Step-by-step explanation:

Given the following data:

_______A___ B ___C ___Total

Male__ 10 __ 17 ___6___ 33

Female_ 11__ 15___ 13___ 39

Total___21__ 32__ 19___ 72

Find the probability that the student was male AND got a "C"

Number of males who got C = 6

Total number of student students = 72

P(student was male and got C) = (number of males who got C / total number of students)

= 6 / 72

= 1 / 12

6 0
3 years ago
The average annual salary for all u.s. teachers is $47,750. assume that the distribution is normal and the standard deviation is
nalin [4]
<span>between 35k and 45k
so answer a.</span>
3 0
3 years ago
One soda and one taco costs $2.1. Two sodas and three tacos cost $5.15. Find the cost of a soda and a taco. Whoever answer this
DaniilM [7]

Answer:

Soda costs $1.15 and taco costs $0.95.

Step-by-step explanation:

x + y = 2.1

2x + 3y = 5.15

Multiply the first equation by -2 to eliminate x

-2x - 2y = -4.2

2x + 3y = 5.15

Add

          y = 0.95

Find x with the original first equation

x + y = 2.1

x + 0.95 = 2.1

x = 2.1 - 0.95

x = 1.15

hope it helps :)

5 0
2 years ago
.6 is ten times as much as
Triss [41]
.6 divided by 10 is .06 so .6 is 10 times more than .06
5 0
3 years ago
Read 2 more answers
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