Mathematics, 22.10.2020 17:01 gunnatvinson
2. A quality control engineer finds that a sample of 100 light bulbs had an average life time of 470 hours. Assuming a population mean of 480 hours with standard deviation of g = 25 hours. Test whether data indicates the mean life time of bulbs is less than 480 hours at 5% level of significance.
a). Write down all the details given in the problem [2 points]
b). State the hypotheses [6 points]
c). Find the critical value and draw in on a bell curve [2 points]
d). Calculate the test statistic [5 points]
e). Find p-value [4 points]
f). What is your decision? [2 points]
g). Interpret your decision in context of the problem. [4 points]
Answers: 2
Mathematics, 21.06.2019 16:30
In the figure shown below, m < 40 and ab =8. which equation could be used to find x?
Answers: 2
Mathematics, 21.06.2019 17:30
You can find the constant of proportionality by finding the ratio of
Answers: 1
Mathematics, 21.06.2019 20:30
1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?
Answers: 1
Mathematics, 21.06.2019 23:00
Jim had 3,067.48 in his checking account he wrote a check to pay for two airplane tickets. his account now has 1,845.24.
Answers: 1
2. A quality control engineer finds that a sample of 100 light bulbs had an average life time of 470...
Mathematics, 14.09.2020 14:01
Mathematics, 14.09.2020 14:01
Social Studies, 14.09.2020 14:01
Social Studies, 14.09.2020 14:01
Mathematics, 14.09.2020 14:01
Mathematics, 14.09.2020 14:01
History, 14.09.2020 14:01
Computers and Technology, 14.09.2020 14:01
French, 14.09.2020 14:01
Mathematics, 14.09.2020 14:01
Social Studies, 14.09.2020 14:01
Mathematics, 14.09.2020 14:01
Mathematics, 14.09.2020 14:01
English, 14.09.2020 14:01
Mathematics, 14.09.2020 14:01
History, 14.09.2020 14:01
English, 14.09.2020 14:01
Mathematics, 14.09.2020 14:01
Mathematics, 14.09.2020 14:01
History, 14.09.2020 14:01