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The average waiting time per customer at a fast food restaurant has been 7.5 minutes. The customer waiting time has a normal distribution. The manager claims that the use of a new cashier system will decrease the average customer waiting time in the store. Based on a random sample of 16 customer transactions, the mean waiting time is 6.3 minutes and the standard deviation is 2 minutes per customer. What is the value of the test statistic we would use to test Ho?
A) t = -2.4 B) t = -1.2 C) t = -0.6 D) t = 2.4 E) z=-2.4
Probability that a randomly selected junior prefers meat toppings. Find the indicated probability. The table shows the number of college students who prefer a given pizza topping.
Prestige Builders has a development of new homes. There are four different floor plans, seven exterior colors, and an option of either a two-car or a three-car garage. How many choices are there for one home?
Describe objects that have each of the following types of symmetry.
John davis, a manager at a supermarket, wants to estimate the proportion of the customers that will be using food stamps at his store. How large a sample is requested to estimate the true proportion with 5% with 95% confidence level?
The length of the shadow of a 200 foot tower is 70 feet. find the angle of elevation of the sun.
At a certain factory, it s determined that an output Q unit is expected when L worker-hours of labor are employed where Q(L) = 3100√L
Description of Probability distribution function, Please give step-by-step process for solving the following probability problems.
What is the approximate distribution that describes the possible values for the sample proportion ? Give all aspects of the distribution.
State the domain of the following and provide a brief explanation fgor your answer: a) f(x)=sqrtx+4 b) g(x)= 2x+1/x-7 c) h(x)=3x^2+5x-3 d) l(x)=2x+3 e) m(x)=3/x^2+7
Kurt Daniels wants to buy a $30,000 car. He has saved $27,000. Find the number of years it will take for his $27,000 to grow to $30,000 at 4% interest compound quarterly.
Find the probability for the serum cholesterol level.
Two boxes of light bulbs are in a warehouse. Box 1 contains 95 good bulbs and 5 defective bulbs, while box 2 contains 90 good and 10 defective bulbs.
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