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You want to prove that a population mean is not 7. Data is ratio and a large sample size will be used (n = 225). When the sample is done the sample mean is computed to be 7.2 and the sample standard deviation is 1.5. Test the hypothesis using an alpha of 5%. Use formal hypothesis testing and compute the p-value.
An associate asks for your help in deciphering the following Anova table, indicating that a test of means was performed. Unfortunately the person leaves before you can get any further explanation or detail, but you know the results must be presented before senior staff within twenty minutes!
Use the formal 5-step hypothesis testing model to describe the test.
Source of Variation SS df MS F Statistic P-value F critical
Between Groups 700.0 2 350.0 4.00 0.0288 3.32
Within Groups 2625.0 30 87.5
Total 3325.0 32
A space vehicle requires five out of its six main engines to operate in order to achieve orbit. If each engine has a reliability of 0.99, determine the reliability of achiev
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Use Excel and the data to test whether the mean alcohol expenditures for UCM students is equal to that of SBU students using a 1 % level of significance.
Tamika's savings account has a balance of $4069. If she makes no deposits or withdrawals for 4 years, and the account accrues interest at 5% compounded quarterly, what will
An averaged department store sells 350 mens suits per year. The mens suit departments at a particular national chain of stores claim they sell more than the industry average
A discrete random variable Y takes the value -1, 0 and 1 with probabilities 1/2θ, 1- θ and 1/2θ respectively. Let Y1 and Y2 be two independent random variables, each with th
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Using the 0.10 level of significance, apply the Kolmogorov-Smirnov test for normality in examining whether the times could have come from a normally distributed population.
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