Listed below are amounts of strontium-90 (in millibecquerels, or mBq, per gram of calcium) in a simple random sample by baby teeth obtained from Pennsylvania residents and New York residents born after 1979. Use a 0.05
Listed below are amounts of strontium-90 (in millibecquerels, or mBq, per gram of calcium) in a simple random sample by baby teeth obtained from Pennsylvania residents and New York residents born after 1979. Use a 0.05 significance level and Wilcoxon rank-sum test to test the claim that the
Pennsylvania | 155 | 142 | 149 | 130 | 151 | 163 | 151 | 142 | 156 | 133 | 138 | 161 |
New York | 133 | 140 | 142 | 131 | 134 | 129 | 128 | 140 | 140 | 140 | 137 | 143 |
1. what is the exact value of R = R 1 (Pennsylvania)? (Round off to 1 decimal place.)
2. what is the value of μ R ? (Type as a whole number.)
3. what is the value of σ R ? (Round off to 2 decimal places.)
4. what is the computed value of z ? (Round off to 2 decimal places.)
5. what is the tabular value of z ? (Round off to 2 decimal places.
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