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
zheka24 [161]
3 years ago
8

A past study claims that adults in America spend an average of 17 hours a week on leisure activities. A researcher wanted to tes

t this claim. She took a sample of 10 adults and asked them about the time they spent per week on leisure activities. Their responses (in hours) are as follows:13242137152518224032Assume that the times spent on leisure activities by all adults are normally distributed. At the 5% significance level, can you conclude that the claim of this earlier study is true
Mathematics
1 answer:
8090 [49]3 years ago
5 0

Answer:

The claim is false.

Step-by-step explanation:

Given the data :

13 24 21 37 15 25 18 22 40 32

The sample mean and standard deviation can ben calculated for the given sample.

Using calculator :

Sample mean, xbar = 24.7

Sample standard deviation, s = 9.04

Sample size, n = 10

The hypothesis :

H0 : μ = 17

H1 : μ ≠ 17

The test statistic :

(xbar - μ) ÷ (s/√(n))

(24.7 - 17) ÷ (9.04/√(10))

7.7 / 2.8586990

Test statistic = 2.694

We can obtain the Pvalue, at α = 0.05 ; df = n-1 = 9

Pvalue = 0.0246

Since Pvalue < α ; we reject the null ; Hence, there is significant evidence to conclude that an adult American does not spend average of 17 hours in leisure

You might be interested in
What is the domain and range of the following graph?
puteri [66]

Using it's concepts, the domain and the range of the graph are given as follows:

  • Domain: all real values except x = -1.
  • Range: All real values.

<h3>What are the domain and the range of a function?</h3>

  • The domain of a function is the set that contains all the values of the input. In a graph, it is given by the values of x, which is the horizontal axis of the graph.
  • The range of a function is the set that contains all the values of the output. In a graph, it is given by the values of y, which is the vertical axis of the graph.

In this graph, have that the function is defined for all values of x except x = -1, and assumes all real values, hence the domain and the range of the graph are given as follows:

  • Domain: all real values except x = -1.
  • Range: All real values.

More can be learned about the domain and the range of a function at brainly.com/question/10891721

#SPJ1

6 0
2 years ago
After a party, Brendan had left over pizza. Brendan had one half of a cheese pizza, 3/4 of a sausage pizza, and 2/6 of a peppero
muminat

3/4+2/6+1/2 = 9/12+4/12+6/12 = 19/12 Brendan has 1 7/12 leftover pizzas. THis is achieved by multiplying for a common denominator and adding

19/12-2/3 = 19/12-8/12 = 11/12 Brendan has 11/12 more pizzas than Steve.

8 0
3 years ago
Which of the following best describes the equation below?<br><br> y = |x| + 5
sleet_krkn [62]

Answer:

On a graph, you go up 5.

4 0
3 years ago
What is the value of k in the function ƒ(x) = 112 - kx if ƒ(-3) = 121?
DedPeter [7]
  f(x) = 112 - kx
 f(-3) = 112 - k(-3)
 f(-3) = 112 - (-3k)
 f(-3) = 112 + 3k
  121 = 112 + 3k
- 112  - 112
      9 = 3k
      3     3
      3 = k
6 0
3 years ago
Is this relation a function?
jeka57 [31]

Answer:

Step-by-step explanation:

so i cant actually see the picture on my school chromebook, but if only one x matches up to one y, then yes.   multiple x's can go to a single y

4 0
3 years ago
Other questions:
  • HELP!
    11·1 answer
  • Help...
    15·1 answer
  • What is the value of y?
    6·1 answer
  • Kim takes her 7 children to the carnival. If she buys 30 tickets for them, which of the following best describes how many ticket
    14·1 answer
  • The population of a certain island has an annual growth rate of 6.9%. If you start with a poplulation of 2500 people, what would
    10·1 answer
  • What is 14 divided by 25
    7·2 answers
  • Solve for x. Show EACH step for full credit. Circle your final answer
    9·2 answers
  • Help help please help help me please I’m so confused ignore what I wrote btw
    14·1 answer
  • Brainliest if answer good
    12·1 answer
  • Caroline is making macaroni and cheese. She needs 3 cups of cheese to make 6 servings. How much cheese will Caroline need to mak
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!