Select the correct answer.
Tim works for a cell phone company and is testing their new biometric security feature.
He conducted a test in which 4,000 attempts were made to unlock the phone. Of the attempts to unlock the phone, 25% were made by someone other than the phone's
owner. The results of the test are shown in the table.
Total
Unlocked
2,418
232
Owner
Not the Owner
Total
Did Not
Unlock
582
768
3,000
1,000
4,000
2,650
1,350
What is the probability that someone who is able to unlock the phone using the biometric security feature is not the owner?

Select The Correct Answer.Tim Works For A Cell Phone Company And Is Testing Their New Biometric Security

Answers

Answer 1

The probability that someone who is able to unlock the phone who is not the owner will be 5.8%. Then the correct option is D.

What is probability?

Its basic premise is that something will almost certainly happen. The percentage of favorable events to the total number of occurrences.

Tim works for a cell phone company and is testing their new biometric security feature.

He conducted a test in which 4,000 attempts were made to unlock the phone. Of the attempts to unlock the phone, 25% were made by someone other than the phone's owner.

The results of the test are shown in the table.

                             Unlocked               Did Not Unlock               Total

Owner                     2418                            582                           3000

Not the Owner        232                             768                            1000

Total                       2650                            1350                          4000

Then the probability that someone who is able to unlock the phone using the biometric security feature is not the owner will be

P = 232 / 4000

P = 0.058

The probability in percentage will be

P = 0.058 x 100

P = 5.8%

Then the correct option is D.

More about the probability link is given below.

https://brainly.com/question/795909

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Answer 2

Answer:

8.8%

Step-by-step explanation:

I did the test.


Related Questions

please help me i really really really need help please please help me please

Answers

9514 1404 393

Answer:

  ∠4 = 100°

Step-by-step explanation:

This has nothing to do with parallel lines.

Angles 1 and 4 are "vertical angles", hence congruent.

  ∠1 = ∠4 = 100°

_____

Vertical angles are on opposites sides of the intersection where lines cross.

A geology teacher takes her class on an annual field trip to analyze rock samples. They use randomized sets of
coordinates to select samples from two regions.
Suppose they examine a sample of 70 rocks from region A, which is composed of 15% igneous rock. Then they
examine a sample of 60 rocks from region B, which is composed of 20% igneous rock. Then they look at the
difference between the sample proportions (PA - B).
What are the mean and standard deviation of the sampling distribution of pA - PB?

Answers

Second option would be the answer

What will the function f(x) = x² look like translated 3
units right and 8 units down?

Answers

Answer:

it will look the same, just shifted.

Step-by-step explanation:

The parabola will be the same shape, size, etc., it will simply be in a different location. Instead of the bottom of the parabola being at (0,0), it will be at (3, -8). translated right 3, down 8.

Work out the area of the circle and leave it in cm plz

Answers

Answer:

132.7495 cm^2

Step-by-step explanation:

area of circle=πr^2

radius=6.5

6.5^2

42.25

42.25*3.142

132.7495

Answer:

132.7495 cm

Step-by-step explanation:

13/2=6.5

6.5*6.5=42.25

42.25*3.142=132.1495

14. Enzo needs to buy some sand for his sandbox. He can either buy a
10-pound bag of sand for $18 or a 6-kilogram bag of sand for $20.
a. Which is a better value? Explain.
b. If Enzo needs 18 pounds of sand, what should he buy so that
he spends the least amount of money overall? Explain.

Answers

Answer:

A: 6 kilo bag B: He should buy two 10 pound bags.

Step-by-step explanation:

Brainliest?

The 6-kilogram pack of sand for $20 is a better value. Then the amount of money for 18 pounds of sand will be $27.18.

What is the rate?

The rate is the ratio of the amount of something to the unit.

For example - If the speed of the car is 20 km/h which means the car travels 20 km in one hour.

Enzo requirements to get some sand for his sandbox. He can either purchase a 10-pound sack of sand for $18 or a 6-kilogram pack of sand for $20.

The rate in the first case is written as,

⇒ 18/10

⇒ $1.8 per pound

The rate in the second case is written as,

⇒ 20/6

⇒ $3.33 per kilogram

⇒ $1.51 per pound

The 6-kilogram pack of sand for $20 is a better value.

Then the amount of money for 18 pounds of sand will be given as,

⇒ $1.51 x 18

⇒ $27.18

Thus, the amount of money for 18 pounds of sand will be $27.18.

More about the rate link is given below.

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someone please help me asnwer this!!

Answers

Answer:

5 units is the answer.

Step-by-step explanation:

[tex]d=\sqrt{(x_2-x_1)^2 + (y_2-y_1)^2} \\\\d=\sqrt{(8-8)^2 + (9-4)^2}\\\\d=\sqrt{(0\\)^2+(5)^2} \\\\d=\sqrt{25} \\\\d=5 \\\\[/tex]

∴ d = 5 units

65% of the total number of students are girls and there are 224 boys. find the percent of boys ? find the number of girls?​

Answers

ANSWER:

Well the percentage of boys would be 35%

I believe the number of girls is 416

hope this helps

ANSWER !!
ILL GIVE 40 POINTS !!
DONT SKIP :((
PLUS BRAINLIEST !

Answers

Answer:

Step-by-step explanation:

What is the volume of the square pyramid?

Answers

To find the volume of a square-based pyramid, use the formula V = A(h/3), where V is the volume and A is the area of the base.

i’ll give you brainliest if you help me pleasee

Answers

Answer:

2nd im pretty sure hope this helpss :) (:

Step-by-step explanation:

GBC Is answer to the question.

If the length of a diagonal of a square is 10 feet what is the length of a side of the square

Answers

the answer is 10ft hope I helped

Please helppppppppppp

Answers

Answer:

Shredders. Paper shredders can help you effectively dispose of sensitive documents and protect your personal information, whether at home or in the office.

Step-by-step explanation:

Answer:

Can you give us the drop down answers?

Step-by-step explanation:

Help plz

The commission system and the council-manager system were both new forms of
state government.
municipal government.
federal government.
county government.

Answers

Answer: B

Step-by-step explanation:

Answer:

municipal government.

Step-by-step explanation:

sorry to bother and all but i have no idea

Answers

Answer:

t=40

Step-by-step explanation:

first, add 21 to -21=0

to keep it balanced add 21 to 19=40

so t=40

hope this helps

Question 1

You buy egg yolks for $13/gallon.

A batch of Hollandaise requires 4 oz of

How much do you spend on egg yolks for one batch of Hollandaise?

Hint: Remember, first convert gallons to ounces, then divide.

egg yolks.

Answer:

Answer

Answers

Answer:

Step-by-step explanation:

0.41

Please help meeeeeeeeeeeeeeeeeeeee​

Answers

67 but why couldn’t u just use a calc

Answer:

64 g

Step-by-step explanation:

Lets gather the Info

Amount needed = 161 g

Amount given = 97 g

Lets form an equation:

161 - 97 = x

x in this case is the number of grams needed to fulfill the amount needed.

161 - 97 = 64 g

He needs 64 g of cheese.

If my answer is wrong pls correct me.

If you like my answer and explanation pls mark me as brainliest.

-Chetan K

VERY EASY, WILL GIVE 50 POINTS FOR CORRECT ANSWER ASAP AND WILL GIVE BRAINLIEST.

Answers

Answer:

C

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

A circle's radius is 19 inches. What is the circle's area?
Use 3.14 for pi and round your answer to the nearest tenth.

If you get it correct you will get Brainlyst

Answers

Answer: 1133.5

Step-by-step explanation:

Answer:

1133.5

Step-by-step explanation:

area = 3.14 (19)square

3.14 (361)

1133.54 ( round nearest ten)

1133.5

A die and a coin are tossed together . Probability of getting a head on the coin is

Answers

what? im very confused...i honestly dont know

A car travels a distance of 190 miles in 4
hours and 45 minutes.
Work out the average speed of the car, in
miles per hour.

Answers

Answer:

Speed = 40 miles/hour

Step-by-step explanation:

Distance (d) = 190 miles

Time (t) = 4 hr 45 min = 19 / 4 hours

Speed = distance / time

= 190 / (19/4)

= 40 miles/hour

The average speed is the total distance traveled by the object in a particular time interval.

The average speed of the car in miles per hour is 40 miles per hour.

What is an average speed?

The average speed is the total distance traveled by the object in a particular time interval.

We have,

Distance traveled in 4 hours and 45 minutes = 190 miles
Time = 4 hours and 45 minutes

This can be written in hours as:

= 4.75 hours

Average speed:

= Total distance / Total time

= 190 miles / 4.75 hours

Divide both the numerator and denominator by 4.75

= (190/4.75) / (4.75/4.75)

= 40 miles / 1 hour

Thus the average speed of the car in miles per hour is 40 miles per hour.

Learn more about average speed here:

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The table below shows Abigail's earnings on the job.
1 pts
Time (hours) Earnings (dollars)
21
$709.80
23
$777.40
35
$1183
What is the unit rate or Constant of Proportionality shown in this table?
How much money does Abigail earn for each hour that she works?

Answers

Answer:

Option (2)

Step-by-step explanation:

In this question we have to calculate the rate of earning or proportionality constant of Abigail.

Since, earning of Abigail (y) ∝ Time worked (t)

y = kt

Here, k = Proportionality constant

From the table attached,

If y = $709.80 and x = 21 hours

709.80 = 21k

k = [tex]\frac{709.8}{21}[/tex]

k = $33.80 per hour

Therefore, rat of earning or proportionality constant is $33.80

Option (2) will be the correct option.


X+ y + 4z = 2
X+ y + 8z = 6
X + 5y + 3z = -3

Answers

Step-by-step explanation:

X+y+4z=2

X+y+x=4-2

X+y+z=2

Solve the following equation without using a calculator.

log3(81)=y

Answers

Answer:hmmvb

Step-by-step explanation:

Help with number 3 please :)

Answers

Answer:

32

You’re... welcome?

Answer:

32

Step-by-step explanation:

The guest column is increasing at a rate of 8, so naturally, the next number would be 32. The cookie column is increasing by 3.

Find the unknown number 3m = 0.27

Answers

Answer: 0.09

Step-by-step explanation:

Divide 0.27 by 3

M=.09

What is the value of the expression (25-7)x2 divided by 4+2

Answers

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{\dfrac{(25-7)(2)}{4}+2}[/tex]

[tex]\mathsf{25-7=\bf 18}[/tex]

[tex]\mathsf{\dfrac{\bold{18}(2)}{4}+2}[/tex]

[tex]\mathsf{18(2)= \bf 36}[/tex]

[tex]\mathsf{\dfrac{\bold{36}}{4}+2}[/tex]

[tex]\mathsf{\dfrac{36}{4}=\bf 9}[/tex]

[tex]\mathsf{\bold{9}+2 }[/tex]

[tex]\bold{= 11}[/tex]

[tex]\boxed{\large\textsf{Possible answer \#1: \bf 11 }}\huge\checkmark[/tex]

[tex]\huge\text{OR....}[/tex]

[tex]\mathsf{\dfrac{(25-7)(2)}{4+2}}[/tex]

[tex]\mathsf{25-7=\bf 18}[/tex]

[tex]\mathsf{\dfrac{\bold{18}(2)}{4+2}}[/tex]

[tex]\mathsf{18(2)=\bf 36}[/tex]

[tex]\mathsf{\dfrac{\bold{36}}{4+2}}[/tex]

[tex]\mathsf{4+2= \bf 6}[/tex]

[tex]\mathsf{\dfrac{36}{\bold{6}}}[/tex]

[tex]\mathsf{\bf = 6}[/tex]

[tex]\boxed{\large\textsf{Possible answer \# 2: \bf 6}}\huge\checkmark[/tex]

[tex]\boxed{\boxed{\large\text{{Answer(s): \bf Answer \#1: 11 OR Answer \#2: 6}}}}\huge\checkmark[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Solve the equation 6 = p -8

Answers

Answer:

p = 14

Step-by-step explanation:

6 = p - 8

We want to isolate p, so add 8 to both sides.

6 + 8 = p

Add.

14 = p

Hope this helps!

Answer is: P = 14

Switch up the numbers.

6 = p - 8 → 6 + 8 = P

Solve for P.

6 + 8 = 14

Hence, 14 is the answer.

0.00000405 in scientific notation

Answers

Answer: 4.5 x 10^-6

Answer:

4.05*10^-6

Step-by-step explanation:

To do this by hand, you need to understand the rules of scientific notation.

Whats the answers to this question?

Answers

Answer:

1) e = 6

2) w = 10

3) s = 27

4) t = 4

Step-by-step explanation:

Cross multiplication

Jayla had some video games, and then she bought 4 more games. Now she has 10 games.
1) Write the equation that matches this situation.
2) Define the variable.
3) Find the solution.

Answers

Step-by-step explanation:

Jalya's video games = x

She bought four more = +4

Now what she has = 10

1. x+4=10

2. The variable x represents the unknown value of the video games Jayla had.

3. x+4=10(Group like terms)

x=10-4

x=6

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