Mathematics, 17.02.2020 20:21 vanna7353
Supercooling temperature of frogs. Many species of terrestrial tree frogs that hibernate at or near the ground surface can survive prolonged exposure to low winter temperatures. In freezing conditions, the frog’s body temperature, called its supercooling temperature, remains relatively higher because of an accumulation of glycerol in its body fluids. A study in Science revealed that the supercooling temperature of terrestrial frogs frozen at -6C has a relative frequency distribution with a mean of -2C and a standard deviation of .3C. Consider the mean supercooling temperature x of a random sample of n = 42 terrestrial frogs frozen at -6C.
a. Find the probability that x eceeds -2.05 C.
b. Find the probability that x falls between -2.20 C and 2.10 C.
Answers: 1
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Lems1. the following data set represents the scores on intelligence quotient(iq) examinations of 40 sixth-grade students at a particular school: 114, 122, 103, 118, 99, 105, 134, 125, 117, 106, 109, 104, 111, 127,133, 111, 117, 103, 120, 98, 100, 130, 141, 119, 128, 106, 109, 115,113, 121, 100, 130, 125, 117, 119, 113, 104, 108, 110, 102(a) present this data set in a frequency histogram.(b) which class interval contains the greatest number of data values? (c) is there a roughly equal number of data in each class interval? (d) does the histogram appear to be approximately symmetric? if so,about which interval is it approximately symmetric?
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Supercooling temperature of frogs. Many species of terrestrial tree frogs that hibernate at or near...
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