Please provide excel step by step instructions
X Value= 624
Confidence Level= 95%
Sample Size , n= 10
Degrees of Freedom,df=n-2 = 8
critical t Value=tα/2 = 2.306 [excel
function: =t.inv.2t(α/2,df) ]
X | (x-x̅)² | |
402 | 4583.29 | |
450 | 13386.49 | |
687 | 124397.29 | |
480 | 21228.49 | |
478 | 20649.69 | |
381 | 2180.89 | |
58 | 76341.69 | |
57 | 76895.29 | |
191 | 20534.89 | |
159 | 30730.09 |
here, x̅ = ΣX/n = 3343/10 = 334.30
SSxx = Σ(x-x̅)² = 390928.10
Standard Error of the Estimate,Se= 6933.50
margin of error,E=t*S(ŷ)= t*Se*√ (1+1/n+(X-X̅)²/Sxx) =
18332.5837
predicted value of Y at X = 324 is
Ŷ = 16963.740 + 34.962 *324 = 38780.333
Prediction Interval Lower Limit=Ŷ -E = 20447.749023
millions
Prediction Interval Upper Limit=Ŷ +E = 57112.916368
millions
so, prediction interval is ($20447749023, $57112916368)
Please provide excel step by step instructions Question Help * 9.3.21 The number of initial public...
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