1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
andrey2020 [161]
3 years ago
15

The average life of a certain type and brand of battery is 75 weeks. The average life of each of 9 randomly selected batteries i

s listed below.
74.5, 75, 72.3, 76, 75.2, 75.1, 75.3, 74.9, 74.8
Assume the battery life distribution is normal. It is of interest to know if the sample data suggest the average life is greater than 75 weeks. Test the hypothesis that the average life of the batteries is greater than 75 weeks at level .05.
A. Since.05< p-value < 0.1, the sample data does not provide enough evidence that the average life of the batteries is greater than 75 weeks.
B. Since.05< p-value < 0.1, the sample data provides enough evidence that the average life of the batteries is greater than 75 weeks.
C. Since p-value > 0.1, the sample data provides enough evidence that the average life of the batteries is greater than 75 weeks.
D. Since p-value > 0.1, the sample data does not provide enough evidence that the average life of the batteries is greater than 75 weeks.
Mathematics
1 answer:
Artyom0805 [142]3 years ago
7 0

Answer:

Option A

Step-by-step explanation:

Since at. 0.05 level of significance, the p value was great than 0.05 but less than 0.1, we will fail to reject the null and conclude that the sample data does not provide enough evidence that the average life of the batteries is greater than 75 weeks.

You might be interested in
11 1/4 divided by 3/4
Evgesh-ka [11]
45/4 * 4/3 = 45/3 is the answer
8 0
3 years ago
Read 2 more answers
Which of the following is not a right triangle?
sergeinik [125]
8 15 17 i think no clue really
8 0
3 years ago
2x-y=4 and y=-2x+8.<br><br> Can anyone help me solve
Komok [63]

Answer:

The correct answer is x = 3 and y = 2.

Step-by-step explanation:

There are many ways to solve systems of equations like this, but I'm going to use substitution.  This means taking the value of y given by the second equation and plugging it into the first equation.  This is modeled below:

2x - y = 4

2x - (-2x+8) = 4

Now, we can simplify the left side of the equation.

2x + 2x - 8 = 4

4x - 8 = 4

We should add 8 to both sides as the next step.

4x = 12

Now we can divide by 4.

x = 3

To solve for y, we can substitute this value found for x back into either one of our original equations.

y = -2x + 8

y = (-2*3) + 8

y = -6 + 8

y = 2

Therefore, the correct answer is x = 3 and y = 2.

Hope this helps!

5 0
3 years ago
Read 2 more answers
What is the standard form of the equation of the circle in the graph?
jonny [76]
What graph......................
3 0
3 years ago
Name all rays ,point and line segment
algol13

Answer:

ratious and axuas

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • How many ounces are equivalent to 25 pounds?
    13·2 answers
  • Ming was planning a trip to Western Samoa.Before going, she did some research and learned that the exchange rate is 6 Tala for $
    14·1 answer
  • Given that f(x) = 2x − 5, find the value of x that makes f(x) = 15.
    7·1 answer
  • A group of friends wants to go to the amusement park. They have $80 to spend on
    8·2 answers
  • NEED HELP ASAP PLSSS WILL MARK BRAILIST!!
    13·2 answers
  • Rewrite the polynomial in the form ax^2+bx+cax 2 +bx+c and then identify the values of a,a, b,b, and cc. -x+5x^2+1
    15·1 answer
  • Test Prep;; A hectare is equal to 2.471 acres. A land developer buys a hectare of land to build homes. Each home will be built o
    13·2 answers
  • Solve pls branliest.
    11·1 answer
  • LIKE I ACTUALLY NEED HELP THIS IS LITERAL TESTING NOT NO QUIZ.
    6·1 answer
  • 12.44 = 4x what does x =
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!