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stiv31 [10]
3 years ago
13

Answer a and b and explain how you did it for 25 points and brainest. Answer has to be correct.

Mathematics
1 answer:
julia-pushkina [17]3 years ago
7 0

Answer:

Step-by-step explanation:

b. 2.5 inches. 20/8=2.5

a. 10.125  inches. 81/8 = 10.125

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A sample of 4 different calculators is randomly selected from a group containing 12 that are defective and 33 that have no defec
Aleks04 [339]

The probability that at least one of the calculators is defective is : 0.725

<h3>What is probability?</h3>

Probability is the likelihood of an event happening or not.

if there is certainty that the event would happen probability is 1.

Analysis:

probability = required outcome/possible outcome

for 33 good calculators and 12 defective calculators, total calculators = 45

4 calculators were chosen, possible outcome = 45C4 = 148995

Required outcome = 33C3 . 12C1 + 33C2 . 12C2 + 33C1 . 12C3 + 33C0 . 12C4

= 65472 + 34848 + 7260 + 495 = 108075

Probability = 108075/148995 = 0.725

Learn more about Probability: brainly.com/question/25870256

#SPJ1

7 0
2 years ago
If we have a square with an area of 75 square meters, what would the side length be?
Mariulka [41]
The answer is 8.660254038
3 0
3 years ago
Consider this population data set: 4, 6, 7, 11, 12, 18, 26, 23, 14, 31, 22, 12. A random sample of four is drawn from this set:
rosijanka [135]
19 I believe is your answer!
3 0
4 years ago
Read 2 more answers
For some value of z, the value of the cumulative standardized normal distribution is 0.8340. the value of z is
Aleksandr-060686 [28]

For some value of z, the value of the cumulative standardized normal distribution is 0.8340. the value of z is

Answer: We are required to find the value of z corresponding to probability 0.8340.

i.e., P(Z

We can find the value of z using the standard normal table.

Using the standard normal table, we have:

z(0.8340)=0.97

Therefore, for the value of z = 0.97, cumulative standardized normal distribution is 0.8340

Attached here standard normal table for your reference.



6 0
3 years ago
What is the value of B-A, as a fraction?
Nikolay [14]
I’m pretty sure you can just do 1/2! since B is 0.75 and A is 0.25 so 0.75-0.25=0.5=1/2
8 0
3 years ago
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