Mathematics, 01.11.2019 03:31 sheldavis
Left-handedness occurs in about 12% of all americans. males are slightly more likely than females to be left-handed, with 13% of males and 11% of females being left-handed. suppose a random sample of 80 females and 100 males is chosen.
-let x be the number of males (out of the 100) who are left-handed.
-let y be the number of females (out of the 80) who are left-handed.
-let z be the total number of left-handed individuals in the sample (males and females together).
which of the following is true regarding the random variables x and y?
a)both x and y can be well approximated by normal random variables.
b)only x can be well approximated by a normal random variable.
c)only y can be well approximated by a normal random variable.
d)neither x nor y can be well approximated by a normal random variable.
Answers: 3
Mathematics, 21.06.2019 17:10
Consider the following equation -167 + 37 = 49 - 21p select the equation that has the same solution as the given equation. o a. p - 5 + ip = 7 - p ob. +55 + 12p = 5p + 16 c. 2 + 1.25p = -3.75p + 10 d. -14 + 6p = -9 - 6p reset next
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Mathematics, 21.06.2019 22:30
Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120
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Mathematics, 22.06.2019 00:00
If (x + 8) is a factor of f(x), which of the following must be true? both x = –8 and x = 8 are roots of f(x). neither x = –8 nor x = 8 is a root of f(x). f(–8) = 0 f(8) = 0
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Mathematics, 22.06.2019 00:00
4. bob solved the inequality problem below incorrectly. explain his error and redo the problem showing the correct answer. −2x + 5 < 17 −2x + 5-5 < 17-5 -2x/-2 < 12/-2 x < -6
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