can someone please help me with this 3 problems: 1.Michael used to make airplane
ID: 3160262 • Letter: C
Question
can someone please help me with this 3 problems:
1.Michael used to make airplanes, boats, flowers and helicopters etc. from old newspapers and used notebooks. One day a street wrecker came in front of Michael's home. The wrecker told Michael that the price of used papers is $2.00 per kilogram. Then Michael learned a lesson and started saving used papers. During the 36 months of three years, Michael earned the following amounts of money from the recyclable papers at his home.
(a). Construct a 95 % confidence interval estimate for michael's per month earnings from the recyclable papers. Interpret it.
(b). Find the margin of error of the confidence interval estimate for Michael's per month earnings from the recyclable papers.
(c).Find the standard of error of the sample mean of Michael's per month earnings from the recyclable papers.
2. In a random sample of 50 eggs the average weight of an egg is 65gms and standard deviation is 3.67 gms.
(a). Construct the 95% confidence interval estimate for the average weight of an egg and interpet it.
(b). What is the margin of error of the 95% interval estimate? Interpret it.
(c). What is the point estimate of the average weight of an egg?
(d). What is the standard error of the sample mean estimator?
3. State which one of the following statements are true or false. Explain why?
(a). In a court if a judge accepts the null-hypothesis Ho, then the judge's decision is that Ho is plausible (or believable), but not true.
(b). In a court if a judge accepts the null-hypothesis Ho, then the judge's decision is that both the Ho and H1 are believable (or plausible).
(c). In a court if a judge rejects the null hypothesis Ho, then the judge concludes that H1 is true.
(d). In a court if a judge rejects the null hypothesis Ho, then the judge concludes that Ho is false.
Fill in the blanks:
(i). In a court, if a judge do not want to collect more information, but decides to increase Type-I error, then the value of Type-II error will............
(ii). In a court if a judge do not want to change Type-I error, but goes on collecting more and more evidences, then the Type-II error will.............
(i) In a court, if a judge do not want to collect more information, but decides to decrease Type-I error, then the value of Type-II error will..............
(ii). In a court if a judege do not want to change Type-I error, but discards some of the evidences, then the Type-II error will..............
Choice: (a) increase (b) decrease (c) remain same (d) increase or decrease
50 60 54 64 78 95 74 73 54 78 42 94 52 36 45 46 87 95 47 37 49 87 24 49 87 78 54 92 51 60 56 23 56 78 34 87Explanation / Answer
2. In a random sample of 50 eggs the average weight of an egg is 65gms and standard deviation is 3.67 gms.
(a). Construct the 95% confidence interval estimate for the average weight of an egg and interpet it.
alpha / 2 = 0.025 df = 49 t = 2.021
I: 65 +/- 2.021 * 3.67 / srqt 50
65 +/- 1.05
63.95 < miu < 66.05
(b). What is the margin of error of the 95% interval estimate? Interpret it.
margin of error : 2.021 * 3.67 / srqt 50 = 1.05
(c). What is the point estimate of the average weight of an egg?
point estimate : 65
(d). What is the standard error of the sample mean estimator?
Serror : 3.67 / srqt 50 = 0.519
for the other question please post it in a new question
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.