subject
Mathematics, 12.05.2020 02:57 asdf334asdf334

The number of hours spent watching television by students in the week before final exams has
a normal distribution with a Standard deviation of 4.5 hours. A random sample of 30 students
was taken. What is the probability that standard deviation exceeds 3.5 hours?

ansver
Answers: 2
Show answers

Another question on Mathematics

question
Mathematics, 21.06.2019 18:00
If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)
Answers: 1
Answer
question
Mathematics, 21.06.2019 18:30
What are different types of statistical programs
Answers: 2
Answer
question
Mathematics, 21.06.2019 20:30
Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?
Answers: 1
Answer
question
Mathematics, 21.06.2019 21:30
Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll
Answers: 1
Answer
You know the right answer?
The number of hours spent watching television by students in the week before final exams has
a...
Questions
question
Mathematics, 04.03.2021 02:50
Draw a line for the axis of symmetry of function f. also mark the x-intercept(s), y-intercept, and vertex of the function f(x)=-2(x-1)(x+3)...
question
Mathematics, 04.03.2021 02:50
I really need help please it’s due tomorrow and I’m very confused.
question
Mathematics, 04.03.2021 02:50
Can someone answer these pls ...
question
Mathematics, 04.03.2021 02:50
2. A plane flew out of Las Vegas on a 1,515-mile flight to Chicago. When the plane was 723 miles away from Chicago, the plane experienced a technical...
question
Mathematics, 04.03.2021 02:50
Which expresses1/25 h2 as a perfect square? (1/5h2)2 (1/5h)2 1/5h (1/25h)2...
question
Physics, 04.03.2021 02:50
Como se comporta matias mier en el equipo de futbol...
question
Chemistry, 04.03.2021 02:50
Sodium and chlorine bond to make the salt, sodium chloride. What type of bond forms between sodium and chlorine? O A. covalent O B. electromagn...
question
Mathematics, 04.03.2021 02:50
Which expresses 9x2y2 as a perfect square?3xy 3x2y2 (3xy)2 9xy...
question
Chemistry, 04.03.2021 02:50
Balance the equation Nh3 no3=n2+o2+h2o...
question
Mathematics, 04.03.2021 02:50
x: 1, 2, 3, 4 y: 1, 1.5, 0.5, 4 Find the correlation r for the data. What fraction in the variation of the values of y is explained by a least squares...
question
Health, 04.03.2021 02:50
How does cocaine affect society...
question
Mathematics, 04.03.2021 02:50
PLZZ HELP!! What is the area of this figure? ...
question
Physics, 04.03.2021 02:50
The geese fly 23 m/s to the south when they migrate for the winter. Identify if this example is speed or velocity....
question
Chemistry, 04.03.2021 02:50
Chemistry question please help ASAP 20 points Laughing gas (nitrous oxide, N2O) is sometimes used as an anesthetic in dentistry. It is produced...
question
Mathematics, 04.03.2021 02:50
The function f(t) = 9800(1.0015) 106 represents the change in a quantity over t decades. What does the constant 1.0015 reveal about the rate of change...
question
History, 04.03.2021 02:50
What does patronage mean?...
question
Mathematics, 04.03.2021 02:50
Can someone please help ...
question
Spanish, 04.03.2021 02:50
? ...
question
History, 04.03.2021 02:50
Why were Americans able to buy more goods? A. They traveled outside the country. B. They had no jobs, but things did not cost as much C....
question
Mathematics, 04.03.2021 02:50
Give the radius or diameter. find the the circumference and area of each circle to the nearest tenth. Use 3.14 for pi D= 24ft...
More questions: Mathematics Another questions
Questions on the website: 13722363
See results (0)