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
diamong [38]
3 years ago
5

Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the phone. The organization thinks

that, currently, the mean is higher. Fifteen randomly chosen teenagers were asked how many hours per week they spend on the phone. The sample mean was 4.75 hours with a sample standard deviation of 2.0. Conduct a hypothesis test, the Type I error is:
a. to conclude that the current mean hours per week is higher than 4.5, when in fact, it is higher
b. to conclude that the current mean hours per week is higher than 4.5, when in fact, it is the same
c. to conclude that the mean hours per week currently is 4.5, when in fact, it is higher
d. to conclude that the mean hours per week currently is no higher than 4.5, when in fact, it is not higher
Mathematics
1 answer:
hammer [34]3 years ago
6 0

Answer:

Type I error is : to conclude that the current mean hours per week is higher than 4.5, when in fact, it is the same.

Step-by-step explanation:

We are given that an organization reported that teenagers spent 4.5 hours per week, on average, on the phone. The organization thinks that, currently, the mean is higher. For this fifteen randomly chosen teenagers were asked how many hours per week they spend on the phone. The sample mean was 4.75 hours with a sample standard deviation of 2.0 hours.

Let Null Hypothesis, H_0 : \mu \leq 4.5 hours {means that the current mean hours per week is less than or equal to 4.5}

Alternate Hypothesis, H_1 : \mu > 4.5 hours {means that the current mean hours per week is higher than 4.5}

<em>Now, T</em><u><em>ype I error states that</em></u><em> : Probability of rejecting null hypothesis given the fact that it was true or Rejecting the true null hypothesis.</em>

<u>So, according our question;</u>

Type I error is to conclude that the current mean hours per week is higher than 4.5, when in fact, it is the same.

You might be interested in
Sam has 30 coins, all nickels and dimes. Together they are worth $2.40 how many nickels and dimes does he have
Aliun [14]

Answer:

20 dimes and 8 nickels

Step-by-step explanation:

20 dimes = 10 x 20 = $2.00 and 8 nickels = 40 cents.

total is 2.40

4 0
3 years ago
Which measurement is closest to the volume of the cone in cubic inches? 6in 16 in
Nookie1986 [14]

Answer:

it problely 16 is close

Step-by-step explanation:

it dipens where the numeber is place at

4 0
3 years ago
Alan will spend at most $30 on gifts. So far, he has spent $19. What are the possible additional amounts he will spend?
Ede4ka [16]

Answer:

$11

Step-by-step explanation:

This is because If you subtract 19 from 30 your answer will be 19.

6 0
2 years ago
PLEASE HELP :D ( these are multi step equations )
AnnyKZ [126]
For the first problem the answer is -5/2

2x−7+10=−2

Step 1: Simplify both sides of the equation.
2x−7+10=−2
2x+−7+10=−2
(2x)+(−7+10)=−2

(Combine Like Terms)
2x+3=−2

Step 2: Subtract 3 from both sides.
2x+3−3=−2−3
2x=−5

Step 3: Divide both sides by 2.
2x/2=−5/2
x=−5/2

Answer:
x= -5/2
3 0
3 years ago
Select the correct answer.
Semenov [28]

Answer:

The last option: 3 x (7 + 2) = (3 x 7) + (3 x 2)

Step-by-step explanation:

There is addition on the inside, and you are distributing the multiplication from the outside.

3 0
3 years ago
Other questions:
  • How can you tell before you divide 425 by 9 that the first digit of the quotient is in the tens place
    6·1 answer
  • The floor at a rolling skating rink is 72.25 feet long and 51.5 feet wide how much longer is the rink than it is wide
    11·2 answers
  • Number 15 explain......
    9·1 answer
  • You buy a quart of ice cream that comes in a cylindrical tub. A quart has a volume about 58 cubic inches. The tub has a height o
    13·1 answer
  • I need help on this one please.....
    8·1 answer
  • 3.7(-83x - 3) = 3.7(7x - 30)
    11·2 answers
  • Solve for z. z−9=27 3 16 18 36
    6·2 answers
  • Give an example of an absolute value inequality whose answers falls between two values. Give an example of an absolute value ine
    6·1 answer
  • I buy a widescreen television costing £1290
    7·2 answers
  • Please help!!!! Find the value of x.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!