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lukranit [14]
3 years ago
5

Please help ♡♡♡♡♡♡♡♡​

Mathematics
2 answers:
hichkok12 [17]3 years ago
8 0
I hope the persons answer helps you!
Nina [5.8K]3 years ago
6 0
Your answer would be 2000
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Help 7th grade math need fast please
Vika [28.1K]

Answer:

It's 4800, just multiply 60x80 bc the population is 80x larger than the sample of 100

8 0
3 years ago
Suppose that 75% of all trucks undergoing a brake inspection at a certain inspection facility pass the inspection. Consider grou
RSB [31]

Answer:

b) 0.2961

c) 0.2251

d) Mean = 11.25, Standard deviation =  1.667  

Step-by-step explanation:

We are given the following information:

We treat trucks undergoing a brake inspection passin as a success.

P( trucks undergoing a brake inspection passes the test) = 75% = 0.75

a) Conditions for binomial probability distribution

  1. There are n independent trial.
  2. Each trial have a success probability p
  3. The probability of success is same for all trials.

Then the number of trucks undergoing a brake inspection follows a binomial distribution, where

P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}

where n is the total number of observations, x is the number of success, p is the probability of success.

Now, we are given n = 15

b) P(proportion of groups will between 8 and 10 trucks pass the inspection)

We have to evaluate:

P(8\leq x \leq 10) = P(x = 8) + P(x = 9) + P(x = 10)\\= \binom{15}{8}(0.75)^8(1-0.75)^7 + \binom{15}{9}(0.75)^9(1-0.75)^6 + \binom{15}{10}(0.75)^{10}(1-0.75)^5\\= 0.0393 + 0.0917 + 0.1651\\= 0.2961

c) P( exactly 3 trucks fail the inspection)

p = 0.25

P(x = 3)\\= \binom{15}{3}(0.25)^3(1-0.25)^{12}\\=0.2251

d) Mean and standard deviation

\mu = np = 15(0.75) = 11.25\\\sigma = \sqrt{np(1-p)} = \sqrt{15(0.75)(1-0.75)} = 1.667

6 0
3 years ago
16 - 2z-4/3 when z=18
Colt1911 [192]

Answer:

z= -3

Step-by-step explanation

5 0
3 years ago
Evaluate:<br> g(x) = 3•2x+2 + 3<br> g(3)
Studentka2010 [4]

Answer:23

Step-by-step explanation:

3·2(3)+2+3

=3·6+2+3

=23

6 0
3 years ago
What is the square root of 18457
Xelga [282]
135.9 rounded to the nearest tenth
8 0
3 years ago
Read 2 more answers
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