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What is the probability that mean annual precipitation during 25 randomly picked years will be less than 90.8 inches?
The diameters of bolts produced by certain machine are normally distributed with mean of 0.30 inches and standard deviation of 0.01 inches.
A standard deviation of 5 hours. What percentage of bulbs has lifetimes which lie within 1 standard deviation of mean on either side?
If light bulbs have lives which are normally distributed with mean of 2500 hours and standard deviation of 500 hours, what percentage of light bulbs have life less than 2500 hours?
What scores fall in -1 and +1 standard deviation? What percentage of scores falls in +1 and +2 standard deviations?
Would such policy make some Americans better off without making any other Americans worse off? Describe who, and why.
Four vehicles are selected to test them. Find the probability that all selected vehicles have air conditioning to preserve the flowers?
A bakery presents cakes with special decoration and also standard cakes. Compute mean, variance and standard deviation. Interprete the results
The manager of Human Resources in company has information about accidents at work during one month. Develop graph which represents probability distribution.
Food company presents 3 different meals: sopa, caldo and rice. Compute average amount charged per meal. Find the variance in charge of the meals?
A study of queues to pay in cash registers at supermarket showed that during busiest hour average number of customer waiting to pay is 4.
Find the probability that on first day of classes when doors are opened first student to arrive to classroom will be a girl?
Justify presence of more than one independent variable in the function. How will extra independent variables affect their function?
A truck's value, y SEK, is assumed to be function of car's age. How much did truck cost as new? Explain how truck's value changes with its age.
In store they sell measure ordered carpets. What costs rectangular carpet with dimension: 2.50m x 3,20m which will line/fringed/trimmed around)?
Write a formula which explains how much you will pay in total for driving school if you undergo/experience driving lesson and take x extra/additional driving lessons.
Write a formula that shows how Anna's salary depends of how many hours she worked. Let y be the pay in SEK when she worked x hours.
The third can hold $50.84. If teri divides money equally among three charities how much money will each charitie get?
The monthly starting salaries in thousands of dollars of 12 maintenance personnel at TCU. Create and interpret % confidence interval for difference in mean starting salaries at TCU and SMU.
Average weight of 101.1 pounds with standard deviation (S) of 10.3 pounds. Does 99% confidence interval support the complaining? Suppose equal population variances. Describe your findings.
Compute 95% con- fidence interval for difference between two cars' mileage. There is no evidence to suggest variances of populations are equal. Describe your findings.
The average price of those 40 books was $65.00 with variance (S2) of $18.06. Compute 90% confidence interval for difference in average prices for two stores. Describe your findings.
Write function f as set of ordered pairs. Is this relation function? Describe answer. Write relation which is the inverse of f as set of ordered pairs. Is this relation function?
What is suitable label for each axis? Y axis: X axis. Find x and y intercepts and state what each one means in relation to value of the car. Y intercept: x intercept.
Six different replies were allowed for each issue. Among completed surveys, how many different responses to survey were possible?