is 32, the estimate of the variance of the model errors is
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- Fourty percent of the students in a class of 120 are planning to go to graduate school Find the variance of the binomial distribution.An analysis of variance produces SSb=35,SSw=15 and a F ratio with the df=1,5.What is the F ratio?From the data set of a class, a student taking a final exam is random variable with mean equal to 50 and variance is 25. Find an upper bound for the student probability that a student's exam score will between 40 and 60.
- X is a normal variable with mean of 8 and variance of 97. What is the z-score when x = 3?An analysis of variance produces SSbetween = 40, SSwithin = 60, and an F-ratio with df = 2, 15. For this analysis, what is the F-ratio?A correlation of +.20 means that [blank] of the variance in the outcome variable is accounted for by the predictor variable.
- The mean and standard deviation of a series of 100 items were found to be 60 and 10 respectively. While calculating, two items were wrongly taken as 5 and 45 instead of 30 and 20. Calculate corrected variance, standard deviation and coefficient of variation.Solve for the variance of the weight of all the beans in a box. Also explain where did you get the formula for varianceDetermine the binomial distribution for which the mean is 4 and variance 3 and find its mode.
- I need the answer as soon as possibleNoise pollution is measured in decibels. In California any motorcycle made after 1980 may not be any louder than 80 decibels. Harley Davidson claims their mean decibel rating on bikes is 70 with a variance of 10. The variance of the noise is questioned. Just because Harley has a mean that is less than 80, they could still be producing louder than acceptable bikes. The federal EPA conducts a sample of 30 bikes and determines the variance to be 20 decibels. Is there enough evidence to question Harley’s claim of 10 decibels?The time at which a bus arrives at a station is uniform over an interval (a,b) with mean 2:00 pm and variance 12 minutes. Determine the values of a and b.