The diameters of ball bearings are distributed normally. The mean diameter is 145 millimeters and the standard deviation is 6 millimeters. Find the probability that the diameter of a selected bearing is between 152 and 155 millimeters. Round your answer to four decimal places.

Roger could feed 5 walruses with 4 kilograms of fish. how many walruses could he feed with 7.2 kilograms of fish?

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The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z