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
Please help!!<br><br>First correct answer = branliest!!<br><br><br>Factor the trinomial: x^2−4x+3
PtichkaEL [24]

<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em><em>⤴</em><em>⤴</em><em>⤴</em>

<em>Hope</em><em> </em><em>this</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em><em>.</em>

7 0
3 years ago
Read 2 more answers
What is 7 2/6 plus 8 5/6
yulyashka [42]
7  2/6 + 8  5/6
= (7 x 6 + 2)/6 + (8 x 6 + 5)/6
= (42 + 2)/6 + (48 + 5)/6
= 44/6 + 53/6
= (44 + 53)/6
= 97/6
= 16  1/6
3 0
3 years ago
Read 2 more answers
Expand and Simplify (x-2)^2
Soloha48 [4]

Answer:

\boxed{\ x^2-4x+4 \ }

Step-by-step explanation:

(x-2)^2 = (x-2)(x-2)=x(x-2)*-2(x-2)=x^2-2x-2x+4=x^2-4x+4

3 0
3 years ago
Find the measure of angle x in the figure below:
Lostsunrise [7]

Answer:

its 130

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
If the length and the breadth of a rectangle are each increased by 1 meter, the area of the rectangle is increased by 22 square
bazaltina [42]

Answer:

42 m

Step-by-step explanation:

l+1 * (b+1) = lb+22

lb+b+l+1 = lb+22

l+b=21

perimeter = 42 m

6 0
2 years ago
Other questions:
  • The sum of the ages of Mrs. Spelman and Mr. Murphy are 78 years. Six years from now Mrs. Spelman's age will be equal to 6 times
    11·1 answer
  • Suppose that (x1, y1) and (x2, y2) are two points on a linear function. Write the formula to find the function’s rate of change
    15·1 answer
  • Mark earns 22% commission on his sales. If his sales were $300, how much commission did he earn!
    6·1 answer
  • The paint can holds 2.5 litres and the length is 19cm what is the radius
    8·1 answer
  • justin wants to use 376 ft of fencing to fence off the greatest possible rectangular area for a garden. What dimensions should h
    11·2 answers
  • PLEASE HELP!<br><br> Reduce to simplest form.<br> 5/8 - (- 7/2)
    6·1 answer
  • You are to take a multiple-choice exam consisting of 100 questions with 2 possible responses to each question. Let x represent t
    12·1 answer
  • DUE JUNE 30TH!!!!!!!!!!!!!!!!!!!!!!
    15·2 answers
  • (BRIANLEIST) HELP<br> True or False
    15·1 answer
  • Can anybody help me with my work
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!