How far she travels to school if walking is slower
The child can get to school in fifteen minutes if she rides the bike. It takes her 45 minutes if she walks. Her speed when walking is given 10 km./hr. slower than speed when riding. How far she travels to school?
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After examining a child at his two year check up, the boy's pediatrician said z-score for his height relative to american 2 year olds was -1.88. Write a sentence to explain to the parents what that means.
A local school district recently implemented experimental program to improve mathematical skills for a specific high risk population. They selected 15 students to be in the initial study.
At same time, another car leaves LA for San Francisco traveling at given speed 50mph. If it is 440 miles between SanFrancisco and LA, how long before 2 cars meet, suppose that each sustains its average speed?
The American insurance company found that 65% of residents of New York City had car insurance (C) with the company. Of these clients, 37% had a health insurance (H) with the company. If a resident is selected at random, find the probability that t
To reduce costs, a medical lab will pool blood to conduct one single test for the prevalence of a relatively rare disease. Assume that 5 people had their blood drawn.
Alex and Yan agree to meet at library between 5 pm and 5:30 pm to study. They will arrive independently. Let's call X the time after 5 pm when Alex arrives, and Y time after 5 pm when Yan arrives. X is distributed uniformly over interval [0,30] mi
Suppose that distance from Winnipeg to Calgary is between 1000 km and 1500 km, determine exact distance they travelled on trip?
A sample of the reading scores of 35 fifth graders has a mean of 82. The standard deviation of the population is 15. Find the best point estimate of the mean
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