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VLD [36.1K]
3 years ago
13

The Ford Motor Company claims that its 2017 model of the Ford Escape averages more than 30 miles per gallon for highway driving.

To investigate this claim, what hypotheses is appropriate?
Mathematics
1 answer:
Talja [164]3 years ago
8 0

Options:

A. Null hypothesis : u>30 Alternative hypothesis :u<30

B. Null hypothesis :u>30 Alternative hypothesis :u=30

C. Null hypothesis :u=30 Alternative hypothesis :u≠30

D. Null hypothesis:u=30 Alternative hypothesis :u>30

Answer:

D. Null hypothesis:u=30 Alternative hypothesis:u>30

Explanation:

The null and alternative hypotheses are hypotheses test made to decide on the value of a population parameter using sample data. They are statements that are mutually exclusive(only one can be true). Therefore the null hypothesis which is the hypothesis being tested becomes true if the alternative hypothesis(everything else that is not the null hypothesis) is false. The null hypothesis assumes that the researcher is wrong as in the above statements while the alternative hypothesis states that the researcher is right.

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Mr Thompson please help with my new HW
sesenic [268]

Answers:

  1. C) x = plus/minus 11
  2. B) No real solutions
  3. C) Two solutions
  4. A) One solution
  5. The value <u>  18  </u> goes in the first blank. The value <u>  17  </u> goes in the second blank.

========================================================

Explanations:

  1. Note how (11)^2 = (11)*(11) = 121 and also (-11)^2 = (-11)*(-11) = 121. The two negatives multiply to a positive. So that's why the solution is x = plus/minus 11. The plus minus breaks down into the two equations x = 11 or x = -11.
  2. There are no real solutions here because the left hand side can never be negative, no matter what real number you pick for x. As mentioned in problem 1, squaring -11 leads to a positive number 121. The same idea applies here as well.
  3. The two solutions are x = 0 and x = -2. We set each factor equal to zero through the zero product property. Then we solve each equation for x. The x+2 = 0 leads to x = -2.
  4. We use the zero product property here as well. We have a repeated factor, so we're only solving one equation and that is x-3 = 0 which leads to x = 3. The only root is x = 3.
  5. Apply the FOIL rule on (x+1)(x+17) to end up with x^2+17x+1x+17 which simplifies fully to x^2+18x+17. The middle x coefficient is 18, while the constant term is 17.
3 0
3 years ago
How do you find out and solve the problem to y=1.08
Anni [7]
You have to be a bit more specific than that
5 0
3 years ago
Read 2 more answers
Jackie’s report is 5 pages longer than half the number of pages in Kane’s report. There are 14 pages in Kane’s report.
olga_2 [115]

Answer:

12

Step-by-step explanation:

If Jackie's report is longer than half kane's report, then

Jackie report=1/2 kane's report +5

1/2(14) +5

7+5

=12

therefore, Jackie's report =12

pls mark brainliest

5 0
2 years ago
Why is (3,4),(5,10),(3,12) not a function
jasenka [17]
A function has a property such as "one input must be mapped to exactly one output." An input is the x-value, and the output is, generally, the y-value. In this set of points above, the input 3 maps to 4 <em>and </em>12, and therefore is not a function. 
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3 years ago
What is the unit length of a'b'
ladessa [460]
5
is thr correct answer

8 0
3 years ago
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