Mathematics, 06.05.2020 00:07 zieglerlana
With domestic sources of building supplies running low several years ago, roughly 60,000 homes were built with imported Chinese drywall. According to an article federal investigators identified a strong association between chemicals in the drywall and electrical problems, and there is also strong evidence of respiratory difficulties due to the emission of hydrogen sulfide gas. An extensive examination of 58 homes found that 46 had such problems. Suppose these 58 were randomly sampled from the population of all homes having Chinese drywall.
(a) Does the data provide strong evidence for concluding that more than 50% of all homes with Chinese drywall have electrical/environmental problems? Carry out a test of hypotheses using a = 0.01.
Compute the test statistic value. Round your answer to two decimal places.
(b) Calculate a lower confidence bound using a confidence level of 99% for the percentage of all such homes that have electrical/environmental problems. (Round your answer to one decimal place.)
(c) If it is actually the case that 80% of all such homes have problems, how likely is it that the test of (a) would not conclude that more than 50% do? (Round your answer to four decimal places.)
Answers: 3
Mathematics, 21.06.2019 19:00
What are the solutions of the system? y = x^2 + 2x +3y = 4x - 2a. (-1, -6) and (-3, -14)b. (-1, 10) and (3, -6)c. no solutiond. (-1, -6) and (3, 10)
Answers: 1
Mathematics, 21.06.2019 20:40
The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?
Answers: 2
Mathematics, 21.06.2019 22:30
The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?
Answers: 1
Mathematics, 22.06.2019 06:00
What is the product of (4x + - 5)? a) -8x^2 - 26x - 15 b) -8x^2 + 26x - 15 c) -8x^2 - 26x + 15
Answers: 1
With domestic sources of building supplies running low several years ago, roughly 60,000 homes were...
Computers and Technology, 22.02.2021 23:50
Mathematics, 22.02.2021 23:50
Mathematics, 22.02.2021 23:50
Biology, 22.02.2021 23:50
Advanced Placement (AP), 22.02.2021 23:50
Chemistry, 22.02.2021 23:50
Mathematics, 22.02.2021 23:50
Geography, 22.02.2021 23:50
Biology, 22.02.2021 23:50
Mathematics, 22.02.2021 23:50
Mathematics, 22.02.2021 23:50
History, 22.02.2021 23:50
Business, 22.02.2021 23:50
Mathematics, 22.02.2021 23:50
Mathematics, 22.02.2021 23:50
Geography, 22.02.2021 23:50