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
Strike441 [17]
3 years ago
8

On each trial of an experiment, a subject is presented with a constant soft noise, which is interrupted at some unpredictable ti

me by a noticeably louder sound. The time it takes for the subject to react to this louder sound is recorded. The following list contains the reaction times (in milliseconds) for the trials of this experiment: 296, 311, 202, 217, 231, 171, 241, 164, 257, 269, 175, 273, 285, 226, 261 Find 25th and 80th percentiles for these reaction times.
Mathematics
1 answer:
Julli [10]3 years ago
6 0

Answer:

25th percentile = 202

80th percentile = 285

Step-by-step explanation:

Rearranging the values in increasing order

164

171

175

202

217

226

231

241

257

261

269

273

285

296

311

N = total number of variables = 15.

25th percentile = [(N + 1)/4]th variable = (15 + 1)/4 = 4th variable.

So, the 25th percentile = 4th variable = 202.

80th percentile = 0.8(N + 1) th variable = 0.8 × (15 + 1) = 12.8th variable = 13th variable = 285

You might be interested in
3) Danyelle needs to borrow $44,000 to finish her basement and consolidate bills. Will take out a home equity line of credit for
Nuetrik [128]
She would save 5940$
6 0
3 years ago
A cone had a diameter of 6 centimeters and a height that is 5 times the diameter. Using 3.14 for pi, which of the following can
marysya [2.9K]

Answer:

D

Step-by-step explanation:

3 0
3 years ago
A $75 fund is available for a holiday party. If 75% of the available money is spent for food and beverages, how much is left for
AleksAgata [21]
$56.25 is going to be your answer it’s D
5 0
3 years ago
Read 2 more answers
A board measures 4 yards, 2 feet, and 6 inches. What is its length in feet?
never [62]
Well think about it .... 1 yard = 3 ft so you'd do 3 times 4 1 foot = 12 inches so it'd be half of a foot
7 0
3 years ago
Read 2 more answers
Tony allows his customers to create their own pizza. The customers choose exactly one type of crust, sauce, cheese, and meat for
Natalka [10]

In cases like these, you simply have to multiply the choices you have for each step.

In fact, you can choose between 4 different crusts. For each of these crusts you can choose 4 different sauces. This means that there are 4\cdot 4 = 16 choices at this point. In fact, if we call the crust options 1,2,3,4 and the sauce options A,B,C,D, the 16 possible combinations are

1A,\ 1B,\ 1C,\ 1D,\ 2A,\ 2B,\ 2C,\ 2D,\ 3A,\ 3B,\ 3C,\ 3D,\ 4A,\ 4B,\ 4C,\ 4D

From here, you keep going multiplying the number of options for each step, for a total of

4\cdot 4 \cdot 3 \cdot 4 = 192

4 0
3 years ago
Read 2 more answers
Other questions:
  • Need help with this please it's on exponential functions
    12·1 answer
  • (24,215-23,500)/[3678/sqrt(85)]
    15·1 answer
  • Determine whether the two quantities is proportional
    14·1 answer
  • A "child has six blocks, three of which are red and three of which are green". How many patterns can shemake by placing them all
    6·1 answer
  • Hi could i get some help with 0.00003 / 2 x 10^-5
    14·1 answer
  • Please help, 40 points!
    10·1 answer
  • The sum of two integers is 81.if the product is 1088.what are the integers
    11·1 answer
  • Cuanto es menos 7 mas 2
    5·2 answers
  • arshad's father bought x sweets .(x-4)were eaten by children and 20 were left.how many sweets did his father bring
    8·2 answers
  • Help I don't understand this math. Whoever gets the right answer gets Brainlist! :)​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!