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
erma4kov [3.2K]
2 years ago
15

According to a survey, the average American person watches TV for 3 hours per week. To test if the amount of TV in New York City

is less than the national average, a researcher decides to do a hypothesis test, at a 10% significance level. She surveys 26 New Yorkers randomly and asks them about their amount of TV each week, on average. From the data, the sample mean time is 2.5 hours per week, and the sample standard deviation (s) is 1.1 hours. H0: μ≥3; Ha: μ<3. α=0.1 (significance level) What is the test statistic (t-value) of this one-mean hypothesis test (with σ unknown)? Round your final answer to two decimal places. Provide your answer below:
Mathematics
2 answers:
Ne4ueva [31]2 years ago
5 0

Answer:

-1.32

Step-by-step explanation:

Since we want to test if \bf \mu of the alternative hypothesis is less than the established in the null, this is a left-tailed test.

<em>At 10% significance level the t-statistic (t-value) is the value of t such that the area under the Student's t-distribution curve with 25 degrees of freedom (sample size -1) to the left of  t equals 10% = 0.1 </em>

Either by using a table or the computer, we find  

\bf t= -1.316\approx -1.32

butalik [34]2 years ago
4 0

Answer:

t=2.32

Step-by-step explanation:

t-value= (population mean-sample mean)/√ (sample SD²/sample size)

t= (3-2.5)/√(1.1²/26)

You might be interested in
What fraction is equivalent to - 3/2
Varvara68 [4.7K]

Answer: -1 1/2

3/2= 1 1/2 just make it a negative

6 0
2 years ago
A new car is purchased for 19900 dollars. The value of the car depreciates at 7.5% per year. What will be the value of the car a
bogdanovich [222]

Answer:

$10665,64

Step-by-step explanation:

S=19900*(1-(7,5/100))^8=10665, 64

6 0
3 years ago
Read 2 more answers
Which of the following will be constructed when the two endpoints of a line segment are folded so that they line up
nataly862011 [7]
B. Midpoint of a line segment
6 0
3 years ago
Read 2 more answers
For a taxi driver, which measures must be accurate? Check all that apply.
astra-53 [7]

Answer:

Them all as he has to know how far he travels the customer rate to see is there is an increase of decrease price of gasoline to see if it's affecting g his outcome and price per miles for obvious reasons haha

3 0
3 years ago
Read 2 more answers
What is happening to this graph when the x values are between -1 and 1
Amiraneli [1.4K]
It is decreasing, since the y-value is going down.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Round 2.12747677748 to the nearest ten-thousandth.
    6·2 answers
  • Explain how to use a horizontal number line<br> to order four fractions from least to greatest.
    13·1 answer
  • 8. The length of a rectangular picture is 4 inches longer than three times the width. If the
    15·1 answer
  • <img src="https://tex.z-dn.net/?f=If%20w%3D2x%2C%20then%20%5Cint%5Climits%5E2_0%20%7Bf%282x%29%7D%20%5C%2C%20dx%20%3D" id="TexFo
    6·1 answer
  • (3, -3); m = -2<br> In standard form
    12·1 answer
  • What is 1% of 62 like i dont understand this
    7·2 answers
  • A manufacturer considers his production process to be out of control when defects exceed 3%. In a random sample of 100 items, th
    10·1 answer
  • Allie needs at least 50 hours of community service for social studies class. She already has 20. How many more hours does she ne
    14·2 answers
  • Write 60% as a
    11·1 answer
  • Help me out please an thank you
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!