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katen-ka-za [31]
3 years ago
8

I require someone to answer this question for me ASAP please?

Mathematics
2 answers:
DedPeter [7]3 years ago
4 0

Answer:

x < 3

I hope this helps!

elixir [45]3 years ago
3 0

Answer:

x has to be less than 3

Step-by-step explanation:

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Congress regulates corporate fuel economy and sets an annual gas mileage for cars. A company with a large fleet of cars hopes to
Dimas [21]

Answer:

The calculated value t= 3,947 >  2.0301 at 0.05 level of significance ( two tailed test) with 35 degrees of freedom.

Null hypothesis is rejected

There is no strong evidence that they have attained their fuel economy​ goal.

Step-by-step explanation:

<u>Step (i):</u>-

A company with a large fleet of cars hopes to meet the goal of 38.2 mpg or better for their fleet of cars.

Population mean 'μ' = 38.2mpg

Given the gasoline usage for 36 company trips chosen at​ random, finding a mean of 40.20 mpg and a standard deviation of 3.04 mpg.

Sample size 'n' = 36

mean  of the Sample 'x⁻' = 40.20mpg

standard deviation of the Sample 'S' = 3.04 mpg.

<u>Step(ii)</u>:-

Null hypothesis: H₀: 'μ' = 38.2mpg

Alternative hypothesis: H₁: 'μ' ≠ 38.2mpg

Level of significance ∝=0.05

The test of hypothesis

                             t = \frac{x^{-} - mean}{\frac{S}{\sqrt{n} } }

                            t = \frac{40.20- 38.20}{\frac{3.04}{\sqrt{36} } } = 3.947

The degrees of freedom ν= n-1 = 36-1 =35

The tabulated value t₀.₀₅ =  2.0301 at 0.05 level of significance ( two tailed test) with 35 degrees of freedom.

The calculated value t= 3,947 >  2.0301 at 0.05 level of significance ( two tailed test) with 35 degrees of freedom.

Null hypothesis is rejected

<u>Conclusion:</u>-

There is no strong evidence that they have attained their fuel economy​ goal.

4 0
2 years ago
Find x. -2(6+x)=18-3x
Alja [10]

Answer:

x=30

Step-by-step explanation:

3 0
2 years ago
Mrs. lopez left for work at 6:35am. she arrived at work 40 minutes later. what time did she arrive at work?
Nadusha1986 [10]

Answer:

the answer will be 7:15 AM.

hope this helps!

4 0
2 years ago
Read 2 more answers
Joseph is weaving a ceremonial Native American sash. The sash will be 8 feet long when it is completed. Joseph wants to add a di
Elan Coil [88]

Answer:

20 diamonds

Step-by-step explanation:

It is given that,

Length of the sash when it is completed = 8 feet

Joseph wants to add a diamond shape every 0.4 feet along the sash.

We need to find no of diamonds the sash have when it is completed. It can be calculated by dividing total length by 0.4 feet. As a result,

n = 8/0.4

n = 20

Hence, 20 diamonds the sash will have when it is completed

7 0
2 years ago
Need help with these
NNADVOKAT [17]
Pretty sure 11 is 75%
7 0
3 years ago
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