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zhannawk [14.2K]
3 years ago
11

Solve the following system of equations.

Mathematics
1 answer:
prisoha [69]3 years ago
4 0
0.01 that should be your answer
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Can someone please help me with this problem
Archy [21]
I think its A because if you think about it 6 and 12 its a easy possiblility so it is A i think
5 0
3 years ago
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15% of applicants for a job possess the right skills. A company has three positions to fill, and they interview applicants one a
mamaluj [8]

Answer:

a) 0.0437

b) 0.6479

c) 0.3958

Step-by-step explanation:

This is a negative binomial distribution problem. A negative binomial distribution problem describes a sequence of trials, each of which can have two outcomes (success or failure). We continue the trials indefinitely until we get r succeses.

The probability of y trials before obtaining r successes is given as

P(y) = ʸ⁻¹Cᵣ₋₁ pʳ qʸ⁻ʳ

p = 0.15

q = 1 - p = 0.85

r = 3

y = 15, ≥15 and ≤15

a) Probability of interviewing exactly 15 applicants.

p = 0.15

q = 1 - p = 0.85

r = 3

y = 15,

P(y=15) = ¹⁵⁻¹C₃₋₁ (0.15)³ (0.85)¹⁵⁻³

P(y=15) = ¹⁴C₂ (0.15)³ (0.85)¹² = 0.0436859997 = 0.0437

b) Probability of interviewing at least 15 applicants = P(y ≥ 15)

P(y ≥ 15) = 1 - P(y < 15)

P(y < 15) = P(y=3) + P(y=4) + P(y=5) + P(y=6) + P(y=7) + P(y=8) + P(y=9) + P(y=10) + P(y=11) + P(y=12) + P(y=13) + P(y=14)

= 0.003375 + 0.00860625 + 0.014630625 + 0.0207267188 + 0.0264265664 + 0.031447614 + 0.0356406292 + 0.0389501162 + 0.0413844985 + 0.0429938957 + 0.0438537736 + 0.0440531089

P(y < 15) = 0.3520887963

P(y ≥ 15) = 1 - P(y < 15) = 1 - 0.3520887963 = 0.6479112037 = 0.6479

c) Probability of interviewing at most 15 applicants

P(y ≤ 15) = P(y=3) + P(y=4) + P(y=5) + P(y=6) + P(y=7) + P(y=8) + P(y=9) + P(y=10) + P(y=11) + P(y=12) + P(y=13) + P(y=14) + P(y=15)

(y ≤ 15) = 0.003375 + 0.00860625 + 0.014630625 + 0.0207267188 + 0.0264265664 + 0.031447614 + 0.0356406292 + 0.0389501162 + 0.0413844985 + 0.0429938957 + 0.0438537736 + 0.0440531089 + 0.0436859997 = 0.395774796 = 0.3958

Hope this Helps!!!

6 0
3 years ago
How to find area of a circle?
beks73 [17]

Answer:

A = πr^2

Step-by-step explanation:

Area = π x r (radius of the circle) squared

3 0
4 years ago
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15 times what is 50 what would the answer be??
baherus [9]
Let the number be x.

15x = 50
x = 50 ÷ 15
x = 10/3

Answer: 10/3 
5 0
3 years ago
A study will investigate the effectiveness of a new textbook. The samples (
givi [52]

The limitation of the research include:

B. The teachers may differ in number of years teaching.

C. The teachers may differ in early childhood experience.

D. The teachers may differ in number of years teaching reading.

<h3>How to explain the information?</h3>

It should be noted that the information given about the teachers is limited to the fact that they teach preschool. It should be noted that if a teacher has more experience teaching, they are probably better at teaching.

Although both teachers teach preschool, one may have many more years of experience or other qualifications.

Learn more about research on:

brainly.com/question/968894

#SPJ1

A study will investigate the effectiveness of a new early reading program onPrekindergarten students' reading abilities. The samples (n = 30 and

n =35) included in the study are taught by two preschool teachers.

Which of the following are possible limitations of the study? Select all that apply.

A. The sample size is too small.

B. The teachers may differ in number of years teaching.

C. The teachers may differ in early childhood experience.

D. The teachers may differ in number of years teaching reading.

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2 years ago
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