百度试题 结果1 题目A fair coin is tossed n-times such that the probability of getting at least one head is at least 0.9.Then the minimum value of n is 4 相关知识点: 试题来源: 解析 4 反馈 收藏
百度试题 结果1 题目A fair coin is tossed 3 times. What is the probability of at least two consecutive heads? C( A)1/8 (B) 1/4 ( C ) 3/8 (D) 1/2 (B) 3/4 相关知识点: 试题来源: 解析 C 反馈 收藏
A fair coin is tossed 3 times. What is the probability of at least two consecutive heads? 一枚质地均匀硬币投掷 3次,国徽面至少连续两次朝上的概率是多少?A. 1/8 B. 1/4 C. 3/8 D. 1/2 E. 3/4 相关知识点: 试题来源: 解析 因此,至少有两次连续正面的概率是3/8,正确答案是C. 3/8。
一枚硬币掷3次,每次都有正反两种可能,所以总共有2^3=8种可能的结果。 第二步,我们计算至少有2次连续正面朝上的结果数。这种情况有3种可能:正正反、正正正、反正正。 第三步,我们根据条件概率的公式,计算至少有2次连续正面朝上的概率。概率等于满足条件的结果数除以总的结果数,即3/8。
A fair coin is tossed repeatedly. The probability that the first head occurs on the nth toss is P(n)=(12)^n. When this game is repeated many times, the average number of tosses required until the first head occurs isE(n)=∑limits_(n=1)^∞nP(n).(This value is called theexpected...
A coin is tossed 6 times . Find the probability of getting at least 3 heads . View Solution Three unbiased coins are tossed simultaneously. Find the probability of getting (i) exactly two heads, (ii) at least two heads, (iii) at most 2 heads. ...
View Solution If a coin is tossed four times then the probability of getting tails at least once is View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class 7, Class 8, Class 9, Class 10, Class 11 and Class 12, IIT JEE prep, ...
7. When a fair coin is tossed six times, the chance of getting 1 or 2 heads is exactly equal to the chance of getting 0 or 3 heads. 8. When a fair coin is tossed and the number of heads recorded, the chance error expressed as a ...
百度试题 题目If a fair coin is tossed twice, what is the probability of obtaining heads both times? A. 1/4. B. 1/2. C. 3/4. D. 1.相关知识点: 试题来源: 解析 A 略 反馈 收藏
If a fair coin is tossed twice, what is the probability of obtaining heads both times?A. 1/4.B. 1/2.C. 3/4.D. 1. 正确答案:A 分享到: 答案解析: The probability of tossing a head, H, is P(H) = 1/2. Since these are independent events, the probability of two heads in a ...