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
Galina-37 [17]
3 years ago
8

An automobile manufacturer has given its van a 39.0 miles/gallon (MPG) rating. An independent testing firm has been contracted t

o test the actual MPG for this van since it is believed that the van has an incorrect manufacturer's MPG rating. After testing 120 vans, they found a mean MPG of 38.8. Assume the population standard deviation is known to be 2.2. Is there sufficient evidence at the 0.02 level to support the testing firm's claim? Make the decision to reject or fail to reject the null hypothesis.
a. Reject Null Hypothesis
b. Fail to Reject Null Hypothesis
Mathematics
1 answer:
swat323 years ago
6 0

I know that the value of the test statistic is z= -1.00 given the information I just read from your upload.

I want to say B. Fail to Reject Null Hypothesis

But I'm not a 100% sure it's actually B

You might be interested in
What is 179.9526 rounded to the nearest tenth
vitfil [10]

Answer:

180.0

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Find the value of the lesser root of x2 + 12x + 35 = 0.<br> A) -7 <br> B) -5 <br> C) 3 <br> D) 5
Katena32 [7]
X2 + 12x +35 = 0
(x+5) (x+7) = 0
x + 5 = 0 x + 7 =0
x= - 5 or x= - 7
5 0
3 years ago
How many zeros does the function f(x) = 3x12 − 17x8 + 11x4 − 6x + 23 have?
Lemur [1.5K]
How many zeros does the function f(x) = 3x12 − 17x8 + 11x4 − 6x + 23 have? 

<span>Answer: the third option (12 zeroes..). </span>

<span>Use ^ to denote an exponent.. </span>

<span>f(x) = 3x^12 - 17x^8 + 11x^4 - 6x + 23.. </span>


<span>We know from that fact that the number of zeroes (real or complex) in a polynomial is the same as the degree of the polynomial.. </span>

<span>The degree is the greatest/highest power of the terms, which in this case is 12 (since 12 is the greatest exponent..).. </span>

<span>The degree is 12, thus it means there are 12 zeroes.. </span>


<span>Answer: the third option (12 zeroes)...</span>
6 0
3 years ago
21. Carmen spent $1.28 for 8 pieces of
Dmitrij [34]

Answer:

2.40

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Analisa recorded 83°, 87°, 90°, and 78° as the highest temperatures in her city for the month of October. She calculated a mean
ss7ja [257]

Answer:

it is the third answer

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • Can you help me please now
    5·1 answer
  • (4,2);slope=3<br><br>help me out
    6·1 answer
  • 235,000 rounded nearest hundred thousand
    13·2 answers
  • Help I am stuck on this.
    9·1 answer
  • In a company's first year in operation, it made an annual profit of 169,500. The profit of the company increased at a constant 1
    6·1 answer
  • The number of bus riders was recorded on one route. The data have these values: minimum = 18, lower quartile = 22,
    8·1 answer
  • 4. Find the following function values.
    7·1 answer
  • What is 70.5 and 79.5 on a number line 60-100?
    11·1 answer
  • How do you find circumstance of a circle using the area? please help!
    6·1 answer
  • If a ⊥ y and x ∥ y, then _____
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!