10. Stock Prices A random sample of stock prices per share (in dollars) is shown. Find the 90% confidence interval for the variance and standard deviation for the prices. Assume the variable is normally distributed. 26.69 13.88 28.37 12.00 75.37 7.50 47.50 43.00 3.81 53.81 13.62 45.12 6.94 28.25 28.00 60.50 40.25 10.87 46.12 14.75

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A: See the handwritten solution

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Q: lustration 12. Find the standard deviation for the following distribution: 54.5 4.5 14.5 24.5 34.5…

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A: Given  n=7, sample mean x̄=511.80, s=183, population mean μ=430.97

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A: Given,n1=24n2=32x1=50.6s1=6.8x2 =55.6s2=3.2α=0.10H0:μ1=μ2H1:μ1<μ2

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