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
If an object weighs 120 pounds on earth how much will it way on mars
butalik [34]
The surface gravity of Mars is 3.7 m/s².  On Earth it is 9.8 m/s².  3.7/9.8 = 38%.

So 38% of 120 lbs is 45 pounds.
 
8 0
3 years ago
Tim ran a quarter mile five times yesterday the table above shows the time of each run in minutes and seconds. For example the t
monitta
Honestly im not even sure lol
3 0
3 years ago
Read 2 more answers
BRAINLIEST. MORE POINTS!!
jek_recluse [69]

Answer:  Negative slope:

Every day, I spend 100 dollars on my credit card.

Positive slope:

Everyday I gain 100 dollars.

Step-by-step explanation:

7 0
3 years ago
Find the midpoint of the segment with the following endpoints.<br> (-10, 2) and (-5, -1)
Dafna11 [192]

Answer:

(4, 5)

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The half-life of caffeine in a healthy adult is 4.8 hours. Jeremiah drinks 18 ounces of caffeinated
statuscvo [17]

We want to see how long will take a healthy adult to reduce the caffeine in his body to a 60%. We will find that the answer is 3.55 hours.

We know that the half-life of caffeine is 4.8 hours, this means that for a given initial quantity of coffee A, after 4.8 hours that quantity reduces to A/2.

So we can define the proportion of coffee that Jeremiah has in his body as:

P(t) = 1*e^{k*t}

Such that:

P(4.8 h) = 0.5 = 1*e^{k*4.8}

Then, if we apply the natural logarithm we get:

Ln(0.5) = Ln(e^{k*4.8})

Ln(0.5) = k*4.8

Ln(0.5)/4.8 = k = -0.144

Then the equation is:

P(t) = 1*e^{-0.144*t}

Now we want to find the time such that the caffeine in his body is the 60% of what he drank that morning, then we must solve:

P(t) = 0.6 =  1*e^{-0.144*t}

Again, we use the natural logarithm:

Ln(0.6) = Ln(e^{-0.144*t})

Ln(0.6) = -0.144*t

Ln(0.6)/-0.144 = t = 3.55

So after 3.55 hours only the 60% of the coffee that he drank that morning will still be in his body.

If you want to learn more, you can read:

brainly.com/question/19599469

7 0
2 years ago
Other questions:
  • Please solve both, graph and show work. answer also has to be in y=mx+b format.
    7·1 answer
  • Find four consecutive integers with the sum of -142
    5·1 answer
  • Please help quick! Write the quadratic function f(x) = 3(x + 1)(x – 7) in standard form. (Answers attached below)
    8·1 answer
  • A car leaves Albany, NY, and travels west toward Buffalo, NY. The equation D=280-59t can be used to represent the distance,D, fr
    9·1 answer
  • Please help me to answer this question​
    8·1 answer
  • Jordan received 9 text messages last week.She received 3 times more text message this week than last week. How many text message
    14·2 answers
  • Find the measure of Angle 5. measure of angle 7 = 2x+15 measure of angle 8 = 3x
    7·1 answer
  • 27 8/9 divided by 6 5/8
    8·1 answer
  • A children's ride at the amusement park has a rule that a person must be
    11·1 answer
  • Man, I fr need help.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!