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bonufazy [111]
3 years ago
12

Use the quadratic formula to solve 4x2– 8x – 60 = 0. 

Mathematics
1 answer:
Kipish [7]3 years ago
6 0
This is the answer to the question.
The answer is c

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Duke Energy reported that the cost of electricity for an efficient home in a particular neighborhood of Cincinnati, Ohio, was $1
Gnoma [55]

Answer:

Step-by-step explanation:

a. H0: μ ≤ 104 Ha: μ > 104

Assuming the data leads to the rejection of the null hypothesis, we would conclude that there is no sufficient statistical evidence to prove that the cost of electricity for an efficient home in a particular neighborhood of Cincinnati, Ohio, was $104 per month.

b. The type error in this situation would be rejecting the null hypothesis when it is actually true. Rejecting the fact that the cost of electricity for an efficient home in a particular neighborhood of Cincinnati, Ohio, was $104 per month when it was actually true.

c. Type II error in this case would be failing to reject the null when it is false. Failing to reject the fact that the cost of electricity for an efficient home in a particular neighborhood of Cincinnati, Ohio, was $104 per month when it is actually not true.

The consequences for these errors might be disastrous including sueing of the accuser party etc.

8 0
3 years ago
Hello again. if someone gives me a hand with this book thickness excercise please thanks
geniusboy [140]

Answer:

Known:

• a book have front, back and 200 pages

• front= 0.7 mm

• back= 0.7 mm

• each page= 0,14 mm

ask:

calculate the minimum thickness...?

answer:

a. 200 p × 0,14 = 28 mm

b. front + back = 0.7+0.7= 1.4 mm

Thickness= 28+1,4 = 29,4 mm

I hope this helps

if u have question let me know in comments^_^

8 0
3 years ago
Which polynomial does the model represent?
Maurinko [17]
Ive never seen a question lie this before
Since the first figure is a square I guess it stand for x^2
then we have -2x + 3x   = x ( the 2 stets of rectangles)
and finally -3 + 1 = - 2
So i am presuming its x^2 + x - 2  
Option b

Im not sure though
3 0
3 years ago
Read 2 more answers
The plant-breeding department at a major university developed a new hybrid boysenberry plant called Stumptown Berry. Based on re
MaRussiya [10]

Answer:

\text{Null hypothesis}: H_0:\mu=90\\\\\text{Alternative Hypothesis}:\mu\neq 90

Step-by-step explanation:

Given claim : From the time shoots are planted 90 days on average are required to obtain the first berry.

. The sample mean is 92.3 days. The corporation wants to know if the mean number of days is different from the 90 days claimed.

As we know that the null hypotheses shows there is no statistical difference between the groups but the alternative hypothesis is opposite to it, it shows there is difference.

Thus , the correct hypotheses will be :-

\text{Null hypothesis}: H_0:\mu=90\\\\\text{Alternative Hypothesis}:\mu\neq 90

3 0
3 years ago
Complete the sentence to make it true statements 6 is 100 times
AnnyKZ [126]

Answer:

6 is 100 times 0.06

Step-by-step explanation:

0.06 times 100 = 6

8 0
3 years ago
Read 2 more answers
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