Percentage investment in new-product development is monitored for a pharmaceutical company, by quarter. The observations are listed
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(a) Can we conclude that the sequence of investment percentages is random? Use α = 0.05.
(b) Is there clustering? Is there a trend? Use a = 0.05.
(c) Can you conclude that the distribution of investment percentages is normal? Use α = 0.01.
(d) Find a 98% confidence interval for the mean percentage investment.
(e) Find a 98% confidence interval for the standard deviation of the percentage investment.
(f) Can we conclude that the mean percentage investment in new products exceeds 31%? Use α = 0.01. What is the p-value? Explain.
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
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a A run chart is constructed using Minitab The following pvalues are indicated pvalue for clustering ...View the full answer
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Related Book For 
Fundamentals of quality control and improvement
ISBN: 978-0470226537
3rd edition
Authors: amitava mitra
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