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Computing probability, mean and standard deviation for the given information.
Assume that a telemarketer makes sales on 7% of all his calls. a.If a telemarketer makes 400 calls in a week, find the mean number of sales expected. b.If a telemarketer makes 400 calls in a week, find the standard deviation of sales expected. c.Is it unusual to get 57 sales in a week? Why or Why not? d.If 80 calls are made in a day, find the probability that there are exactly 4 sales. e.If 80 calls are made in a day, find the probability that there are at least 4 sales.
How are they interpreted in terms of the original problem? Are the results reasonable? If not, what are the failings of the model that led to poor results?
For speeds between 40 and 65 mph, a truck gets 480/x miles per gallon when driven at a constant speed of x miles per hour. Diesel gasoline costs 2.23 per gallon, and the driver is paid 15.10 per hour.
Learning is a lifetime activity. For some, it means learning from everyday experiences; for others, it means taking classes in a more traditional atmosphere. The percentage of people participating in organized learning situations during 2002 for e..
The cost, in millions of dollars, to remove x % of pollution in a lake modeled by
The interest rate is 5.25%. Earnings will compound daily. How much does Alex have in the bank today that allows him to pull $25,000 out for 10 years.
The cover of the tank is a hemisphere with outside radius of 20ft and inside radius of 18ft. How much concrete was used in the cover?
ployee's new salary is $20,370 after getting a 5% raise. What was the salary before the increase in pay? Last years salary was $
Which number is compatible to use as a dividend with 7?
Miranda's finanical aid stipulates that her tuition not exceed $1500. If her college charges a $45 registration fee plus $275 per course, what is the greatest number of courses for which Miranda can register?
The first car has consumed 35 gallons during that week, and the second has consumed 40 gallons, for a total of 2050 miles driven by the two cars combined. What was the average gas mileage obtained by each of the two cars in that week?
The median age at first marriage for females increased from 24.5 years in 1995 to 25.1 years in 2000 (U.S. Census Bureau, www.census.gov). Let 1995 be year 5 and 2000 be year 10.
A ski jump is design to follow the path given by the equations: x=3.5t^2 and y=20.0+0.120t^4 - 3.00 sqrt(t^4+1) (0 less than or equal to (t) less than or equal to 4.00 s) ( x and y in m, t in s). Find the velocity and acceleration of a skier when ..
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