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
lbvjy [14]
2 years ago
14

A statistician wants to determine if there is a difference in the fuel efficiency of cars between model years. To do this, he se

lects random makes and models of cars and compares the fuel efficiency in miles per gallon of the current model year and the previous model year. Suppose that data were collected for a random sample of 9 cars, where each difference is calculated by subtracting the fuel efficiency in miles per gallon of the previous model year from the fuel efficiency in miles per gallon of the current model year. Assume that the fuel efficiencies are normally distributed. The statistician uses the alternative hypothesis Ha:μd≠0. Using a test statistic of t≈6.163, which has 8 degrees of freedom, determine the range that contains the p-value.

Mathematics
1 answer:
Elodia [21]2 years ago
4 0

Answer:

P-value = 0.00028

Step-by-step explanation:

The statician performs an hypothesis test for the mean difference.

As the alternative hypothesis is<em> Ha: μd ≠ 0</em>, we know that it is a two-tailed test.

The test statistic is t=6.163.

For a two-tailed test and 8 degrees of freedom, this corresponds to a P-value of:

\text{P-value}=2\cdot P(t>6.163)=0.00028

This P-value is smaller enough to reject the null hypothesis at almost any significance level.

You might be interested in
Imena's math test scores are 83, 93, 78, 89, and 83. She has one more math test this semester. What score most she get on the te
marshall27 [118]
87 is the median because 83 and 87's average is 85.
8 0
3 years ago
Read 2 more answers
Does anyone get this question plss
a_sh-v [17]

Answer:

D)  1.0

Step-by-step explanation:

if y = 1 then x = 1

6 0
3 years ago
What common side does ΔABC share with ΔADC?<br><br><br> BC<br><br> AD<br><br> BD<br><br> AC
Zarrin [17]
I think it’s AC, but I may be wrong
6 0
2 years ago
Read 2 more answers
the school cafeteria served 125.6 liters of milk on Monday and 5.34 more liters of milk on Tuesday than on monday.how many total
UkoKoshka [18]
The total amount will be
  total = (125.6 L) + ((125.6 +5.34) L) = (2*125.6 +5.34) L
  total = 256.54 L
5 0
3 years ago
At a football stadium, 10% of the fans in attendance were teenagers. If there were 30 teenagers at the football stadium, what wa
JulijaS [17]

Answer:

i believe the answer to this is a total of 300 people because you multiply the ten percent into the 30 people which factors out some numerical values, so then your answer as i just said is 300 people in total attended the game.

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • Christopher wrote the number pattern below. The first term is 8.
    6·1 answer
  • Solve for x....<br> -4+13x=12x+4
    10·2 answers
  • You accept a job as a marine biologist that pays a salary of $45,000 the first year. During the next 39 years, you receive a 5.5
    11·1 answer
  • Solving liner equations 2×- 19=30​
    7·1 answer
  • On the way to the mall miguel rides his skateboard to get to the bus stop. He then waits a few minutes for the bus to come tuen
    14·1 answer
  • The Jackson family drove 496 miles in 8 hours. which is the unit rate in fraction form
    11·2 answers
  • Please help! It’s urgent!
    5·1 answer
  • The teacher prepares a tour. Its cost is $246 for her and 5 people to take a day-long guided tour of the Eveglades. How much doe
    11·1 answer
  • Find the components of the vector v with initial point P and terminal point Q. Find the unit vector u in the direction of v.
    12·1 answer
  • Find the slope of the line that passes through the pair of points: (2,-3) and
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!