Question: 11.6 A random sample from a population has n = 30, Ex; = 120, Ex, = 8310. (a) Calculate unbiased estimates of the population mean,

11.6 A random sample from a population has n = 30, Ex; = 120, Ex, = 8310. (a) Calculate unbiased estimates of the population mean, the popu- lation variance, and the variance of the sample mean. (b) Provide an approximate 95% confidence interval for the popu- lation mean

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5. It is the needs of the individual that are important.

6. It is what the person has previously done for the group that is the deciding factor.

3. It is the commitment you show that is the deciding factor.