probability distribution with mean and standard deviation σ. The data are given in ps. An accounting analyst takes a random sample of size 64 from an unknown Spreadsheet "Question 3": 0.92 1.57 1.81 1.83 2.25 2.40 2.43 2.73 2.85 2.97 2.99 3.02 3.32 3.71 3.83 3.83 3.84 3.89 3.99 4.02 4.06 4.09 4.38 4.46 4.46 4.47 4.55 4.66 4.71 4.74 4.82 4.83 4.86 4.92 5.14 5.17 5.27 5.28 5.31 5.34 5.46 5.50 5.54 5.58 5.63 5.64 5.64 5.65 5.71 5.71 5.73 5.79 5.83 5.85 5.96 6.01 6.23 6.24 6.27 6.35 6.63 7.46 7.96 9.15 n = 64, Στ = 301.26, Στ2 = 1569.120. Answer the following questions. (a) What are the sample mean and standard deviation? (b) Find the point estimate of the population mean μ, the value of to.025,n-1, and the margin or error E associated with this estimate, respectively (use a = 0.05). (c) Construct a 95% confidence interval for u and find the width of this interval.
probability distribution with mean and standard deviation σ. The data are given in ps. An accounting analyst takes a random sample of size 64 from an unknown Spreadsheet "Question 3": 0.92 1.57 1.81 1.83 2.25 2.40 2.43 2.73 2.85 2.97 2.99 3.02 3.32 3.71 3.83 3.83 3.84 3.89 3.99 4.02 4.06 4.09 4.38 4.46 4.46 4.47 4.55 4.66 4.71 4.74 4.82 4.83 4.86 4.92 5.14 5.17 5.27 5.28 5.31 5.34 5.46 5.50 5.54 5.58 5.63 5.64 5.64 5.65 5.71 5.71 5.73 5.79 5.83 5.85 5.96 6.01 6.23 6.24 6.27 6.35 6.63 7.46 7.96 9.15 n = 64, Στ = 301.26, Στ2 = 1569.120. Answer the following questions. (a) What are the sample mean and standard deviation? (b) Find the point estimate of the population mean μ, the value of to.025,n-1, and the margin or error E associated with this estimate, respectively (use a = 0.05). (c) Construct a 95% confidence interval for u and find the width of this interval.
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
Transcribed Image Text:probability distribution with mean and standard deviation σ. The data are given in
ps. An accounting analyst takes a random sample of size 64 from an unknown
Spreadsheet "Question 3":
0.92 1.57 1.81 1.83 2.25 2.40 2.43 2.73 2.85 2.97 2.99 3.02 3.32 3.71 3.83 3.83 3.84 3.89
3.99 4.02 4.06 4.09 4.38 4.46 4.46 4.47 4.55 4.66 4.71 4.74 4.82 4.83 4.86 4.92 5.14 5.17 5.27
5.28 5.31 5.34 5.46 5.50 5.54 5.58 5.63 5.64 5.64 5.65 5.71 5.71 5.73 5.79 5.83 5.85 5.96 6.01
6.23 6.24 6.27 6.35 6.63 7.46 7.96 9.15
n = 64,
Στ = 301.26,
Στ2 = 1569.120.
Answer the following questions.
(a) What are the sample mean and standard deviation?
(b) Find the point estimate of the population mean μ, the value of to.025,n-1, and the
margin or error E associated with this estimate, respectively (use a = 0.05).
(c) Construct a 95% confidence interval for u and find the width of this interval.
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