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
Help me please this is due in a couple minutes
dsp73

Answer:

v=0.79x+3.99

f=1.89x+5.49

combined cost: 2.68×+9.48

8 0
3 years ago
What fraction of 42 g is 7000 mg​
Vsevolod [243]

Answer:

3/500

Step-by-step explanation:

42/7000 simplified is 3/500 or in decimal form it's 0.006

4 0
3 years ago
Please help me find the values of these irraational numbers on a number line!!!
uranmaximum [27]
Here, You have to simplify every number to their simple form and place it on the arrow by approximation:

So, Here is your answers:

Upper Arrows (From Left towards right):
1st = -10√2/3
2nd = -√7
3rd = ∛4
4th = √50

Lower Arrows (From Left towards right):
1st = -√99
2nd = -√17
3rd = ∛9
4th = π

Hope this helps!
7 0
3 years ago
I'll make you brainlist and 40 points <br><br>(2z²)^-3<br><br>please hurry<br>​
gladu [14]
Is the goal to simplify? You just need to multiply the exponents for each factor:

(2z^2)^(-3)
= 2^(-3) x z^(2 x -3)
= (1/2)^3 x z^(-6)
= (1/8) x (1/z)^6
= 1/(8z^6)
7 0
3 years ago
Read 2 more answers
Will spent $3.75 for 3 pounds of granola. What is his unit rate in dollars per pound?
Drupady [299]
The unit rate is $1.25 per pound
6 0
3 years ago
Other questions:
  • What's the square root of 247
    12·2 answers
  • Please answer all please
    15·1 answer
  • Select all of the following equation(s) that are quadratic in form.
    11·2 answers
  • This table gives a few (x, y) pairs of a line in the coordinate plane. What is the y-intercept of the line?
    7·1 answer
  • Which expression is equivalent to One-fifth (150 x minus 80 y + 50 minus 50 x minus 25 y + 20)?
    15·2 answers
  • What is the volume of a sphere with a'radius of 39.6 m, rounded to the nearest tenth
    9·1 answer
  • You roll a 6-sided die two times. What is the probability of rolling 1 and then rolling a 2
    12·1 answer
  • Which answer is correct? Please hurry &lt;3
    6·1 answer
  • PLEASE HELP ASAPPPPP
    10·1 answer
  • Find the surface area of the prism. 7 yd 7 yd 7 yd​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!