Assume that when adults with smartphones are randomly selected,
4242%
use them in meetings or classes. If
1414
adult smartphone users are randomly selected, find the probability that fewer than
44
of them use their smartphones in meetings or classes.
The probability is
nothing.
(Type an integer or decimal rounded to four decimal places as needed.)
SOLUTION :
p = adults with smartphones = 42% = 0.42
q = adults without smartphones = 1 - 0.42 = 0.58
As per binomial distribution : For n = 14 :
P(x < 4)
= P(0) + P(1) + P(2) + P(3)
= ncr(14, 0)*(0.42)^0 *(0.58)^14 +ncr(14, 1)*(0.42)*(0.58)^13+ ncr(14, 2)*(0.42)^2 * (0.58)^12 + ncr(14, 3)*(0.42)^3 * (0.58)^11
= 0.0961 (ANSWER).
Assume that when adults with smartphones are randomly selected, 4242% use them in meetings or classes....
Assume that when adults with smartphones are randomly selected, 46 % use them in meetings or classes. If 15 adult smartphone users are randomly selected, find the probability that fewer than 5 of them use their smartphones in meetings or classes.The probability is _______ (Type an integer or decimal rounded to four decimal places as needed.)
Assume that when adults with smartphones are randomly selected, 48% use them in meetings or classes. If 14 adult smartphone users are randomly selected, find the probability that fewer than 3 of them use their smartphones in meetings or classes. The probability is . (Type an integer or decimal rounded to four decimal places as needed.)
Assume that when adults with smartphones are randomly selected, 42 % use them in meetings or classes. If 13 adult smartphone users are randomly selected, find the probability that fewer than 4 of them use their smartphones in meetings or classes.The probablity is _______ (Type an integer or decimal rounded to four decimal places as needed.)
Assume that when adults with smartphones are randomly selected, 62% use them in meetings or classes. If 9 adult smartphone users are randomly selected, find the probability that exactly 4 of them use their smartphones in meetings or classes. The probability is nothing. (Round to four decimal places as needed.)
Assume that when adults with smartphones are randomly selected, 47% use them in meetings or classes. If 8 adult smartphone users are randomly selected, find the probability that exactly 4 of them use their smartphones in meetings or classes. The probability is nothing. (Round to four decimal places as needed.
Assume that when adults with smartphones are randomly selected, 44% use them in meetings or classes. If 7 adult smartphone users are randomly selected, find the probability that at least 3 of them use their smartphones in meetings or classes. The probability is _______ Round to four decimal places as needed.)
Assume that when adults with smartphones are randomly selected, 64% use them in meetings or classes. If 88 adult smartphone users are randomly selected, find the probability that exactly 44 of them use their smartphones in meetings or classes. The probability is ____? Round to four decimal places as needed.
Assume that when adults with smartphones are randomly selected, 58% use them in meetings or classes. If 12 adult smartphone users are randomly selected, find the probability that fewer than 44 of them use their smartphones in meetings or classes. The probability is?
Assume that when adults with smartphones are randomly selected, 44% use them in meetings or classes. If 13 adult smartphone users are randomly selected, find the probability that fewer than 5 of them use their smartphones in meetings or classes.
Assume that when adults with smartphones are randomly selected, 44% use them in meetings or classes. If 7 adult smartphone users are randomly selected, find the probability that exactly 5 of them use their smartphones in meetings or classes. The probability is (round to four decimals places as needed.)