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SCORPION-xisa [38]
3 years ago
10

My guys got me I am giving brainliest

Mathematics
1 answer:
Mrrafil [7]3 years ago
5 0

Answer:

bottom right i did that 1 yesterday

Step-by-step explanation:

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Suppose that only 65% of all drivers in a certain state wear a seat belt. a random sample of 80 drivers is selected. what is the
jonny [76]

Answer:

Pr(X >42) = Pr( Z > -2.344)

                = Pr( Z< 2.344) = 0.9905

Step-by-step explanation:

The scenario presented can be modeled by a binomial model;

The probability of success is, p = 0.65

There are n = 80 independent trials

Let X denote the number of drivers that wear a seat belt, then we are to find the probability that X is greater than 42;

Pr(X > 42)

In this case we can use the normal approximation to the binomial model;

mu = n*p = 80(0.65) = 52

sigma^2 = n*p*(1-p) = 18.2

Pr(X >42) = Pr( Z > -2.344)

                = Pr( Z< 2.344) = 0.9905

7 0
3 years ago
Simplify. Write your answer using whole numbers and variables.
Andre45 [30]

Answer:

q + 7

Step-by-step explanation:

(q² + 4q − 21) / (q − 3)

Factor the numerator:

(q + 7) (q − 3) / (q − 3)

Divide:

q + 7

5 0
3 years ago
A wheel in this scale drawing is 4 cm wide. The ratio of the drawing is 1:14. How wide is the actual wheel in cm?
bagirrra123 [75]

1:14 means that for every 1 cm it is drawn at it is actually 14 cm

 so multiply 4 x 14 = 56

 it is actually 56 cm wide

7 0
3 years ago
What is square root of 1+sinx/1+cos x.
Juli2301 [7.4K]

Answer:

the sqaure root of 1 is 1

Step-by-step explanation:

7 0
2 years ago
What is the Estimation of 7×65 (Needs to he answered by 3pm)​
suter [353]

Answer:

7x65 is 455

Step-by-step explanation:

I need more info if this does not workout...

6 0
3 years ago
Read 2 more answers
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