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Discover Questions

Assume the random variable X is normally distributed with mean μ=
50 and standard deviation σ=7. Find the
87th percentile.
Thanks!? Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P( −b < z < b)= 0.1264, find b.? What insect looks similar to a cockroach but is bigger, has pinchers, and thick antennas ? If 45 grams of magnesium combines completely with 36.5 grams of oxygen, what is the mass percent of magnesium in the compound? ONE CARD IS DRAWN FROM A STANDARD 52 CARD DECK. GIVE THE FOLLOWING PROBABILITY AS A FRACTION: P(JACK)?