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
valkas [14]
3 years ago
8

A psychologist regularly runs rats through a maze and records the amount of time it takes them to finish. One hundred rats were

run through a maze and they averaged 20 seconds with a standard deviation of 5 seconds. Assume that run-times follow a mound-shaped distribution. What can you say about the percentage of rats that took less than 10 seconds to finish?
Mathematics
1 answer:
Serhud [2]3 years ago
6 0

Answer:

Step-by-step explanation:

  • Given that μ = 20seconds and SD-standard deviation = 5seconds
  • To get the percentage of rats that took less than 10 seconds to finish is;
  • P( X < 10) = P( z < x -μ/SD)
  • = P( z< -2.00) = 0.028 = 2.28%
  • Hence, 2.28% of the rats took less than 10seconds to finish
You might be interested in
The sum of two consecutive even integers is 2 find two integers
pochemuha

the two consecutive even integers are:

x

x+2

x+x+2=2

2x+2=2

2x=0

x=0

x+2=2

7 0
4 years ago
Find the equation of the circle with center at the origin and x-intercepts 12 and -12
Troyanec [42]
Since the radius is 12, the equation is
.. x^2 +y^2 = 144
5 0
3 years ago
The table below shows the typical hours worked by employees at a company. A new employee is offered an annual salary of $37,000.
Mademuasel [1]

Answer:

Salaried pay is preferable for a new employee

Step-by-step explanation:

<u>As per table, hours worked per week:</u>

  • 0+ 8.5+ 9.5+ 7.5+ 8+ 8.5+ 4 = 46

<u>Employee gets paid for 46 hours per week:</u>

  • $40*14 + (46- 40)*$21 = $686

<u>Average yearly salary would be:</u>

  • $686/7*365 = $35770

<u>Comparing with annual salary, we see:</u>

  • $37000 > $35770

As we see, hourly employees get paid less, so the new employee should choose annual salary option

7 0
3 years ago
Garth estimated the height of the door ti his classroom in meters. what is a reasonable estimate?
chubhunter [2.5K]
2 because 3 meters is labor 6 feet and 2 is above 5'9'' so it's kinda understandable
7 0
3 years ago
Factor pairs for 18 and
Solnce55 [7]
3,3,2 these are the primes of 18
4 0
4 years ago
Other questions:
  • What is 1/10 of 7 is it 0.7?
    13·1 answer
  • Find SP when CP=Rs.400 and proft%=4%
    13·2 answers
  • Suppose you work for a life insurance company. At your job, you use the following table, which shows the number of people out of
    13·2 answers
  • BRAINLIEST AND FIVE STARS TO CORRECT ANSWER
    14·1 answer
  • If p is true and ~ q is false, then p ~ q is always, sometimes, never false.
    10·1 answer
  • Josh wants to wallpaper the back wall of his bedroom. The wall is in the shape of a rectangle. Its length is 17 feet and its
    11·1 answer
  • Which number is not irrational?<br> A. 20<br> B. 127<br> c. 125<br> D. V50
    13·1 answer
  • James is 60 years old. His age is 8 years more than twice Maggie's age. How old is Maggie?
    9·2 answers
  • In a basketball game, Shawna made 8 baskets, each worth 3 points.
    10·1 answer
  • What is the greatest common factor of<br> 15x^7y^5+5x^5y^4-20x^6y
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!