Mathematics, 19.06.2020 00:57 10040813
The average life of a certain type and brand of battery is 75 weeks. The average life of each of 9 randomly selected batteries is 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.
Answers: 3
Another question on Mathematics
Mathematics, 20.06.2019 18:04
Write each expression in exponential form and find its value. 2 x 2 x 2 x 2
Answers: 2
Mathematics, 21.06.2019 17:30
In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab
Answers: 1
Mathematics, 21.06.2019 19:00
The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?
Answers: 1
You know the right answer?
The average life of a certain type and brand of battery is 75 weeks. The average life of each of 9 r...
Questions
English, 28.10.2020 22:40
Chemistry, 28.10.2020 22:40
Computers and Technology, 28.10.2020 22:40
English, 28.10.2020 22:40
Mathematics, 28.10.2020 22:40
Mathematics, 28.10.2020 22:40
Biology, 28.10.2020 22:40
Mathematics, 28.10.2020 22:40
Mathematics, 28.10.2020 22:40
