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]
3 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]3 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
Https://mee t.go ogle.co m/o yi- ta km- tes
coldgirl [10]
That link looks messed up
8 0
2 years ago
An infinite number of ratios are equivalent to 3:8. How
Inessa05 [86]

Answer:

See below, please!

Step-by-step explanation:

There are infinite number of ratios equivalent to 3:8 because both numbers can be multiplied by a common number or divided by a common number.

For example, 9:24 would still be equivalent to 3:8 because the common number in our case is 3. See what I mean?

Hope this helped!

3 0
3 years ago
CAN ANYONE HELP ME OUT ON THIS QUESTION WITH THE RIGHT Answer
earnstyle [38]

Answer:

A

Step-by-step explanation:

5 0
3 years ago
A= 1/2 h (m+n)<br> solve for n
melisa1 [442]

Answer:

2hms+2hns

Step-by-step explanation:

3 0
2 years ago
What's the slope of -4,6 and 3,-8
notsponge [240]

Answer:

The slope is -2

Step-by-step explanation:

(-4,6) (3,-8)

(y₂ - y₁) / (x₂ - x₁)

((-8) - (6)) / ((3) - (-4))

(-8 - 6) / (3 + 4)

-14/7 = -2

4 0
3 years ago
Other questions:
  • Kasey gets a 35% employee discount on anything she buys at the foot parade if $5.25 discount on her new flip flops how much did
    5·2 answers
  • How many solutions are there to the quadratic formula 10x + y = -x2 + 2
    8·1 answer
  • can the locus of the points idea can be used to define straight lines,cicles,and even more complex shapes such as parables
    6·1 answer
  • Which represents the word sentence as an inequality?<br> A number n is at least 17.
    8·2 answers
  • I don't understand this problem
    9·1 answer
  • Steeze Co. makes snowboards and uses the total cost approach in setting product prices. Its costs for producing 10,500 units fol
    14·1 answer
  • How do you solve this
    13·2 answers
  • PLease help me find the unit rate for $140 for 18 ft
    7·1 answer
  • PLEASE HELP ME ON THIS QUESTION ASAP!! GIVING 15 POINTS AWAY!!
    9·1 answer
  • Express <br><img src="https://tex.z-dn.net/?f=%284%20-%20x%29%20%7B%7D%5E%7B%20%5Cfrac%7B1%7D%7B2%7D%20%7D%20" id="TexFormula1"
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!