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Runners. In a study of exercise, a large group of male runners walk on a treadmill for 6 minutes. After this exercise, their heart rates vary with mean 8.8 beats per five seconds and standard deviation 1.0 beats per five seconds. This distribution takes only whole-number values, so it is certainly not Normal. What is the approximate probability that x ¯ is between 9 and 9.5 when measuring for 12 intervals?
A company has fixed costs of 20,000,and the cost of producing one unit of their product is $10. the unit sell for $20. write an equation for the total cost. write an equation for the total revenue. graph these equations to find the break even poin..
What is the claim? Compute the critical value for a=0.05, compute the test value. Is there sufficient evidence to support he claim?
Find the hypothesis and the null hypothesis
The manager of a supermarket found that 72% of the shoppers who taste a free sample of a food item will buy the item. What is the expected number of shoppers that will buy the item if a random sample of 50 shoppers taste a free sample?
Find the average height of the ball over the time interval extending from the time of the ball?s release to its return to ground level. The height at time t is h(t) = 288t - 16t2
A 118 foot line is attached to a kite. When the kite has pulled the line taut,the angle of elevation to the kite is approximately 42 degrees. Approximate the height of the kite.
two identical firms have mc 1 and face a market demand function of p 6 - q.thus total quantity q q1 q2 the sum of
Explain what is meant by a universal set. Give a real world example of two universal sets. Be sure to first clearly define the two sets.
A survey showed that small engineering companies use three fuels for heating workshops, electricity, gas and kerosene. Draw a Venn diagram showing the relationship between the sets
gina sam and robby all rented movies from the same video store. they each rented some dramas comedies and
Examples of Probability and Statistics in Real Life, Can you think of situations in the business world or other real life situations where you would need to calculate or estimate probabilities?
A rod has length 3 meters. At a distance x meters from its left end, the density of the rod is given by δ(x) = 1 + 7x g/m. Complete the Riemann sum for the total mass of the rod (use Dx in place of Δx).
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