Determining the normal population yields

Reference no: EM13963799

1. Let a random sample of size 17 from a normal population for which both mean μ and variance σ2 are unknown yield x = 3.12 and s2 = 1.04. Determine a 99% con?dence interval for μ.

2. A random sample from a normal population yields the following 25 values:

90	87	121	96	106 107 89	107 83 92
117	93	98	120	97 109 78	87 99 79
104	85	91	107	89

(a) Calculate an unbiased estimate θˆ of the population mean.

(b) Give approximate 99% con?dence interval for the population mean.

Reference no: EM13963799

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