Question: Three confidence intervals for the mean shear strength (in ksi) of anchor bolts of a certain type are computed, all from the same sample. The

Three confidence intervals for the mean shear strength

(in ksi) of anchor bolts of a certain type are computed, all from the same sample. The intervals are

(4.01, 6.02), (4.20, 5.83), and (3.57, 6.46). The levels of the intervals are 90%, 95%, and 99%. Which interval has which level?

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