A manufacturer of truck hoods wishes to estimate the mean weight of the hoods being produced from second shift. A sample size of size 8 pieces will be measured and the sample mean and sample standard deviation will be used to compute a 90% confidence interval. Which one of the following is the correct critical value to use in the computation of the 90% confidence interval? O 1.895 O 1.397 O 1.860 O 1.645 O 1.415

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