Mathematics, 31.12.2019 05:31 tristan70
In a quality control test of parts manufactured at dabco corporation, an engineer sampled parts produced on the first, second, and third shifts. the research study was designed to determine if the population proportion of good parts was the same for all three shifts. sample data follow.
production shift
quality first second third
good 285 368 176
defective 15 32 24
a. using a .05 level of significance, conduct a hypothesis test to determine if the population proportion of good parts is the same for all three shifts. what is the p-value and what is your conclusion?
b. if the conclusion is that the population proportions are not all equal, use a multiple comparison procedure to determine how the shifts differ in terms of quality. what shift or shifts need to improve the quality of parts produced?
Answers: 2
Mathematics, 21.06.2019 13:00
Use this data in the problem below. follow the steps carefully. round to the nearest tenth. lot 3: week 1: 345 week 2: 340 week 3: 400 week 4: 325 step 1. jim enters the data and calculates the average or mean. step 2. jim calculates the deviation from the mean by subtracting the mean from each value. step 3. jim squares each deviation to remove negative signs. step 4. jim sums the squares of each deviation and divides by the count for the variance. step 5. jim takes the square root of the variance to find the standard deviation.
Answers: 2
Mathematics, 21.06.2019 16:20
Apolynomial function has a root of –6 with multiplicity 1, a root of –2 with multiplicity 3, a root of 0 with multiplicity 2, and a root of 4 with multiplicity 3. if the function has a positive leading coefficient and is of odd degree, which statement about the graph is true?
Answers: 2
Mathematics, 21.06.2019 18:00
My math teacher told my class to "steal" a 6th grade fraction word problem from the internet, word problems? : -p requirements: only a 1 step word problem. needs to be complex.
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In a quality control test of parts manufactured at dabco corporation, an engineer sampled parts prod...
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