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## 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 ...
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## Line equation

If line y= -3x+K is tangent to the circle x^2 +y^2 = 10, find all the possible values of K Rate the problemHard (1)Spam (0)Helpful (0)Wow (0)

## 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...
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## Find the average speed

For the first 100 miles of his trip, Sohan drove at 50 miles/hr. Then because of delays, he drove only 39 miles/hr for next 120 miles. What was his...
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## statistics

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

Given are two regression lines. Determine the coefficient of correlation. Rate the problemSpam (0)Hard (0)Helpful (0)Wow (0)
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## Explain me Fibonacci series … with pictures plz! :)

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## 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)
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## 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)
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## Find x in quadratic equation

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