Question

It is known (or determined) that average total testosterone levels in 35 – 44 year old men is 668 ng/dl (nanograms per deciliter) with a standard deviation of 212. There were 64 individuals (within that same age) that seemed to be diagnosed with alcohol addiction and they had testosterone measured with an average of 471. It wants to be determined if this level of testosterone in this 64 individuals is significantly different from the normal population of that age. Please answer the following questions.

a) Specify H₀and H₁ and the acceptable level of a will be 0.05. Look up Z number on normality table associated with 0.05 / 2 = 0.02 and it is 1.96 (ie reject H₀ if /Z/ > 1.96).

b) Define the sample-based test statistic and the rejection number (is above) to determine if the null hypothesis will be rejected, ie. higher than population Z. The formula to calculate is this. Known of course is Y, µ, σ, and ṇ. Calculate Z.

$2Q==$

Answer 1

Pege No. Date.: us H11 -Uキ471 Test 4 212 64 197 26.S 구‘ 4339 -Zoos/2 ← Zo.oz = 1.96 Decision Rule ce