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
jeka94
3 years ago
13

Dr. Jamison gives students 90 minutes to complete the final exam for her course. Most students use almost all the time allowed,

and relatively few students finish early, so the distribution of times that it takes students to finish the exam is strongly skewed to the left. The mean and standard deviation of the finishing times are 85 and10minutes, respectively.
Suppose we took random samples of 40 students and calculated x as the sample mean finishing time. We can assume that the students in each sample are independent.
What would be the shape of the sampling distribution of x? Please select one option and then briefly explain:

a) Skewed to the left
b) Skewed to the right
c) Approximately normal
d) Unknown; we don't have enough information to determine the shape.
Mathematics
1 answer:
charle [14.2K]3 years ago
8 0

Answer:

C

Step-by-step explanation:

Brief explanation

The Sample space represented by 40 students are considered a larger sample size. Consequently, even with the decreasing number of population remaining doing the exam, the distribution of x is approximately normal

You might be interested in
I REALLY NEED HELP ON THESE TWO QUESTIONS!!! I'd really appreciate it...
Mariana [72]

Answer:

On the first one the total is 37500.The second dealer is again,37500.You put a coma after every 3 digit so the coma is 357,000.Sorry if I over explained it.

6 0
3 years ago
Read 2 more answers
PLEASE HELP!!!! I HAVE TO SUBMIT THIS IN AND I DONT KNOW!!
masya89 [10]

Answer:

your answer is clearly luke skywalker banana toungue

Step-by-step explanation:

because i felt like it

8 0
3 years ago
How do I draw a model for 328 divided by 2
Arada [10]
The answer will be 656 but i cant really explain how to draw a model with the question sorry
7 0
4 years ago
Read 2 more answers
14.
Readme [11.4K]

The domain is t=0 to t=3.2  and range is y = 0 to 57.125 feet.

<u>What are Domain and range of a Function?</u>

  • The range of values that we are permitted to enter into our function is known as the domain of a function.
  • The x values for a function like f make up this set (x). A function's range is the collection of values it can take as input.
  • After we enter an x value, the function outputs this sequence of values. The y values are those.
  • A function can be compared to a piece of equipment on an assembly line.
  • A few screws and nuts are located on one end of the assembly line, while a car is located on the other. The function is the device in the center. The domain is the screws and bolts that we insert into the machine. The car at the other can be thought of as the range.

Given function is : y = -16t^2 + 50t + 4

It hits the ground when y=0

0 = -16t^2 + 50t + 4

8t^2 -25t -2 = 0

t = 25/16 + (1/16)sqrt(625+64) = (25+26.25)/16 = 51.25/16 = 3.2 seconds

domain is t=0 to t=3.2  [3.2]

take the derivative and set it equal to zero to find maximum height

-32t +50 = 0

t = 50/32 = 25/16 = 1.5625 seconds

-16(25/16) + 50(25/16) + 4 = 34(25/16) + 64/16 = (17(25)+32)/8 = 57.125 = maximum height

range is y = 0 to 57.125 feet.   the discus goes from 4 feet to 57 1/8 feet and back down to 0 feet.

Know more about Domain and Range with the help of the given link:

brainly.com/question/20349151

#SPJ4

8 0
2 years ago
Question 30
aleksklad [387]

Answer:3

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Here it is^ algebra 1
    15·1 answer
  • What is the volume of the composite figure?
    5·1 answer
  • Deon rented a truck for one day. There was a base fee of $20.95 , and there was an additional charge of 90 cents for each mile d
    5·1 answer
  • Factor 9x^3y-25xy^3 completely.
    6·2 answers
  • Which two values of X are roots of the polynomial below 4x^2-6x+1
    11·1 answer
  • a two digit number is 6 more than 3 times its unit digits.find the number if the sum of its digits is 9
    6·1 answer
  • -5x+2y=16 <br> Please help me
    6·1 answer
  • Combine the following: a+a+a+b+b+c<br> i really need help <br> help me plzzzzzzzzz
    14·1 answer
  • What is 40 kilometers per hour in meters per hour?
    11·1 answer
  • Jellybeans are stored in a container. The jellybeans (on their own) weigh a net mass of 60g and the container weighs a net mass
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!