1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zavuch27 [327]
3 years ago
9

The time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated b

y a normal distribution with a mean value of 150 sec and a standard deviation of 25 sec. The fastest 10% are to be given advanced training. What task times qualify individuals for such training? (Round the answer to one decimal place.)
________ seconds or less
Mathematics
1 answer:
Gala2k [10]3 years ago
3 0

Answer:

214.5 seconds or less time will qualify individuals for such training

Step-by-step explanation:

given that the time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated by a normal distribution with a mean value of 150 sec and a standard deviation of 25 sec.

i.e. X the time that it takes a randomly selected job applicant to perform a certain task is N(150,25)

The fastest 10% are the ones who are above the 90th percentile

We know 90th percentile for Z std normal score is 1.28

Corresponding X score would be

x=\mu+1.28 \sigma\\X= 150+1.28(25)\\= 214.50

Round off to one decimal

214.5 seconds or less time will qualify individuals for such training

You might be interested in
Graph the inequality on<br> 19. x 27 <br><br> How do you graph it?
topjm [15]

Answer:

x and y axes

Step-by-step explanation:

you have to graph them on either the x axes or y axes :))

7 0
3 years ago
"What is the difference between a ratio and its related rate and unit rate?"
Vinil7 [7]

Answer:

Step-by-step explanation:

The ratio is the relationship of two numbers. ... A rate is a little bit different than the ratio, it is a special ratio. It is a comparison of measurements that have different units, like cents and grams. A unit rate is a rate with a denominator of 1.

7 0
2 years ago
The heights of the elevators can be modeled by the linear functions. At times t=0. Elevator A is 16 feet above ground floor and
polet [3.4K]
The answer is second one which is B
3 0
3 years ago
Find the amount of time. I=$237. 90, P=$1525, r=2. 6%<br> Find the amount of time. __ Years
Virty [35]

~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\dotfill & \$237.90\\ P=\textit{original amount deposited}\dotfill & \$1525\\ r=rate\to 2.6\%\to \frac{2.6}{100}\dotfill &0.026\\ t=years \end{cases} \\\\\\ 237.90 = (1525)(0.026)(t)\implies \cfrac{237.90}{(1525)(0.026)}=t \implies 6=t

3 0
2 years ago
What is the sum of complex numbers 2+3i and 4+8i, where i= square root -1
bearhunter [10]

Answer:

6+11i

Step-by-step explanation:

2+3i  +  4+8i

Add the real parts

2+4 = 6

And the imaginary parts

3i+8i = 11i

The complex number is the real plus the imaginary

6+11i

3 0
3 years ago
Other questions:
  • Any figure that has line symmetry must also have rotational symmetry. true or false
    15·1 answer
  • 3 people have 2 bananas to share how much banana does each person get​
    9·2 answers
  • A rectangle and a triangle with the same base and height have the same area. True or false
    15·2 answers
  • Harry goes to hogwarts a School of witchcraft. He decides to choose his methods of transportation to and from hogwarts at this r
    12·1 answer
  • Type the correct answer in the box. For this item, any non-integer answer should be entered as a decimal rounded to the hundredt
    6·1 answer
  • 3.12 X 10 to the power of 3
    9·2 answers
  • A sample of 200 observations from the first population indicated that X1 is 170. A sam- ple of 150 observations from the second
    12·1 answer
  • Jen can bike 12 miles in 40 minutes. How much time will she need to bike 30 miles if her speed remains the same? PLEASE HELP QUI
    14·2 answers
  • Find the 52nd term for the following sequence. 16,6,-4,-14....
    15·1 answer
  • Sammy finds satellite images of a school and a museum. They put the images on a coordinate grid (shown
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!