Archives for Statistics

You are here: »

Statistics-Mean

In computing a mean of 8 numbers, a boy mistakenly used 17 instead of 25 as one of the numbers and obtained 20 as mean. Find the correct ...
1 Replied

Word problem

A garrison of 120 men is provisioned for 24 weeks at 350 gm per day per man. How many men must leave so that the same provision may last...
1 Replied

statistics

Find the mean, variance ,and standard deviation for the following data :                           5,9, 8,12,6,10,6,8. Rate...
1 Replied

average

average
The average age of 24 students and the principal is 15 years. When the principal’s age is excluded, the average decreases by 1 year. What is the average of...
3 Replied

Correlation

Correlation
Given are two regression lines. Determine the coefficient of correlation. Rate the problemSpam (0)Hard (0)Helpful (0)Wow (0)
1 Replied

Probability mass func

Probability mass func
The probability mass function  (PMF) of a variate X is given in the table. Find mean and varience. Rate the problemSpam (0)Hard (0)Helpful (0)Wow (0)
2 Replied

Probability

Probability
How many times a man must toss a coin, so that the probability of having  at least one head is more than 80% ? Rate the problemSpam (0)Hard (0)Helpful (0)Wow (0)
1 Replied
Skip to toolbar