Maths
posted by Naveen .
Eight coins are tossed at a time,256 times Number of heads observed at each throw is recorded and the results are given below. Find the expected frequencies What are the theoretical values of main and standard deviation? Calculate also the mean the S.D. of the observed frequencies.
No. of heads at throw
0
1
2
3
4
Frequency
2
6
30
52
67
No. of heads at throw
5
6
7
8
Frequency
56
32
10
1
Respond to this Question
Similar Questions

Intro to probability
Two balanced coins are tossed. What are the expected value and the variance of the number of heads observed? 
stat
Three coins are tossed, and the number of heads observed is recorded. (Give your answers as fractions.) (a) Find the probability for 0 heads. (b) Find the probability for 1 head. (c) Find the probability for 2 heads. (d) Find the probability … 
math answer check
Three coins are tossed, and the number of heads observed is recorded. (Give your answers as fractions.) (a) Find the probability for 0 heads. Incorrect: Your answer is incorrect. . Your answer cannot be understood or graded. More Information … 
statistics
Five coins all balanced the same were tossed 150 times. Note that, while the coins are all balanced the same, they may or may not be fair coins. Since five coins were tossed, the possible number of heads for each toss could be zero … 
college
5 coins are tossed 3200times. Find the expected frequency for heads and tails also find the mean and varience of the number of heads? 
Math (statistics)
The probability of obtaining heads on a biased coin is 0.4. The coin is tossed 600 times. a. i. Write down the mean number of heads (240) ii. Find the standard deviation of the number of heads (12) b. Find the probability that the … 
math
1.find the mean,variance and standard deviation for the number of heads when 10 coins are tossed. 2.it has been reported that 83% of government employees has been migrated onto the singlespin salary structure.if a sample of 200 government … 
math
find the mean,variance and standard deviation for the number of heads when 10 coins are tossed. 
college practical statistics
Five coins are tossed 3200 times find the frequencies of distribution of heads & tails & tabulate the results. Calculate the mean number of success & the standard deviation. 
Maths
Five coins are tossed 320 times find the frequencies of the distribution of number of heads and tabulate the result