Please explain all steps who we get the answers. Thanks! 8. A company receives s
ID: 3046874 • Letter: P
Question
Please explain all steps who we get the answers. Thanks!8. A company receives shipments of for a high-end selects ar rigorous specifications. From a recent large shipment, a components was tested, and 24 units failed one or more o confidence, what is the margin of error in the point components in the shipment that fail to meet the company's specifications' a component used in the manufacture of a component acoustic speaker system. When the components arrive, the company om sample from the shipment and subjects the selected components to a and set of tests to determine if the components in the shipments conform to their random sample of 250 of the f the tests. At the 98%level or estimate of the proportion of 9- The 95% confidence interval for the difference in proportions 0.014). Based on the 95% confidence interval, answer the following questions no, or can't tell. At the 5% significance leve with yes, I, do we reject the null hypothesis? A manufacturer of insecticides has developed two formulations for new insecticides using two different compounds, A and B. To test the effectiveness of these two ormulations a study was conducted in which insects of a particular type were released into an enclosure and the enclosure then sprayed with an insecticide. Independent studies were conducted for each formulation. The results of the study are provided in the following table Compound A 200 ompoundB 180 umber of insects released umber of insects killed 135 108 To test the hypotheses Ho: p-P 0 against Ha: p-PR>0, what is the P-value of the test and the conclusion the company can reach as a result? students from West University and East University by sending a survey to a sample of 100 students at both universities. Of the 100 sampled from West University, 15 reported they were involved in a car accident within the past year. Of the 100 randomly sampled students from East University, 12 students reported they were involved in a car accident within the past year. What is the estimate of the difference, d, between the two sample proportions, p, and p, , of students at East University and West University respectively, who were involved in a car accident within the last year? 11. A study was conducted to determine if there was a difference in the driving ability of
Explanation / Answer
8)
8)
n = 250 , X = 24
p^ = X /n = 24/250 = 0.096
margin of error = z * sqrt(pq/n)
z = 2.327
margin of error = z * sqrt(pq/n)
= 2.327 * sqrt( 0.096 * (1-0.096)/250)
= 0.0433557
9)
95% confidence interval = (-0.017,0.014)
since 0 is present in confidence interval
we fail to reject the null hypothesis
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