![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 18.11.2019 03:31, canonmille2
Acompany that produces cell phones claims its standard phone battery has a mean lifetime of 35 hours with a standard deviation of 2.25 hours. in order to investigate the company’s claim, a consumer advocacy group takes a sample of 75 batteries and finds a mean lifetime of 34.45 hours. at a 1% level of significance, is there evidence for the consumer advocacy group to conclude that the mean lifetime of the batteries is lower than claimed?
blank #1: is this a question involving mean or proportion?
blank #2: which type of distribution should be used to calculate the probability for this question?
blank #3: which of the following options are the appropriate hypotheses for this question:
a) h0: μ = 34.45 hrs h1: μ > 34.45 hrs
b) h0: μ = 35 hrs h1: μ > 35 hrs
c) h0: μ = 34.45 hrs h1: μ < 34.45 hrs
d) h0: μ = 35 hrs h1: μ < 35 hrs
e) h0: μ = 34.45 hrs h1: μ ≠ 34.45 hrs
f) h0: μ = 35 hrs h1: μ ≠ 35 hrs
blank #4: what is the p-value of this sample? ***answer to 4 decimals, be sure to include leading zero, example "0.1234" ".1234"***
blank#5: based on this sample, at a 1% level of significance, is there evidence for the consumer advocacy group to conclude that the mean lifetime of the batteries is lower than claimed? ***answer "yes" or "no" (without the quotation marks)***
question 1 options:
![answer](/tpl/images/cats/otvet.png)
Answers: 1
Other questions on the subject: Mathematics
![image](/tpl/images/cats/mat.png)
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:00, arizmendiivan713
*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why?
Answers: 1
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:10, lizbeth696
The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is
Answers: 1
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:40, aydanbelle
Full year - williamshow many square inches are in 60 square feet? 5 square inches72 square inches720 square inche8.640 square inches
Answers: 1
Do you know the correct answer?
Acompany that produces cell phones claims its standard phone battery has a mean lifetime of 35 hours...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
Mathematics, 19.11.2021 22:20
![Konu](/tpl/images/cats/himiya.png)
Chemistry, 19.11.2021 22:30
![Konu](/tpl/images/cats/ekonomika.png)
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/en.png)
English, 19.11.2021 22:30
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 19.11.2021 22:30
![Konu](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 19.11.2021 22:30
![Konu](/tpl/images/cats/mat.png)
Mathematics, 19.11.2021 22:30
![Konu](/tpl/images/cats/mat.png)
Mathematics, 19.11.2021 22:30