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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

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Someone help me please!
Natasha_Volkova [10]

Answer:

y < -3x + 2

Step-by-step explanation:

The shading is below the line meaning the inequality is less than. Moreover, the line is dashed meaning there is no 'equal to'.

Therefore, the inequality is y < -3x + 2.

5 0
2 years ago
If a plate is moving 3.3 cm/yr, what distance [in kilometers (km)] will the plate move in 1 million years?
sasho [114]

\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}

<h2>33 km</h2>

3.3cm = 0.000033km (divide by 100,000.

So, 0.000033km/yr.

0.000033 × 1,000,000

=33km

  • Thanks
  • Hope it helps

3 0
2 years ago
A cylindrical tank is filled with 66.85 mm3 of fuel. The area of the base of the cylinder is 15 mm2. What is the height of the f
Rashid [163]
Volume = (Area of the base)x(Height)
66.85 = 15(H)
66.85/15 = H
H = 4.4567

The height is 4.4567mm.
3 0
3 years ago
What is 7 2/6 plus 8 5/6
yulyashka [42]
7  2/6 + 8  5/6
= (7 x 6 + 2)/6 + (8 x 6 + 5)/6
= (42 + 2)/6 + (48 + 5)/6
= 44/6 + 53/6
= (44 + 53)/6
= 97/6
= 16  1/6
3 0
3 years ago
Read 2 more answers
The Spanish version of Michelle Obama's book,
Nina [5.8K]
359 is the correct answer for the English one I think
4 0
2 years ago
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