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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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Attempting to use the regression equation to make predictions beyond the range of the data is called​ _______.
masha68 [24]
<span>Extrapolating. Extrapolating is making inferences that beyond the data range. In contrast to this, interpolating is using the data set to make estimates as to what would happen in the data range.</span>
4 0
3 years ago
3) Differentiate with respect to x: a) (x²-3x+5)(2x-7)​
9966 [12]

Answer:

6x²-26x+31

Step-by-step explanation:

(x²-3x+5)(2x-7)​

=2x³-7x²-6x²+21x+10x-35

=2x³-13x²+31x-35

Now to differentiate:

dx=6x²-26x+31

4 0
2 years ago
Abby Boernet has yet to receive 60% of her lobster order. Abby received 80 lobsters to date. What was her original order?
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So Abby hasn't received 60% of her order, BUT she already got 80 lobsters, hmmmmm well, 100% - 60% is just 40%, so she already got the 40%, which incidentally is 80 lobsters.  Let's say the whole order, or 100% of it is "x" lobsters.

if 80 lobsters are 40%, what is "x"?

\bf \begin{array}{ccll}&#10;amount&\%\\&#10;\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\&#10;x&100\\&#10;80&40&#10;\end{array}\implies \cfrac{x}{80}=\cfrac{100}{40}\implies x=\cfrac{80\cdot 100}{40}
7 0
2 years ago
Hi who wann atalk dont awnser tht question i just put it there
goldfiish [28.3K]

Answer:

ill talk

Step-by-step explanation:

7 0
3 years ago
Find the next 3 terms of the sequence
Allushta [10]

Answer:

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Step-by-step explanation:

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-24 * 4 = -96

-96 * 4 = -384

-384 * 4 = -1,536

-1536 * 4 = -6,144

-6144 * 4 = -24,576

8 0
3 years ago
Read 2 more answers
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