Average price of a car wash
Ben claims that the average price of a car wash in West Newton is more than $6.00. A sample of five car washes has an average price of $6.60 and a standard deviation of $1.10. At alpha = 0.05, test Ben's claim.
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When two resistors, R1 and R2, are connected in series across a 6.0-V battery the potential difference across R1 is 4.4 V. When R1 and R2 are connected in parallel to the same battery the current through R2 is 0.64 A. Find the values of R1 and R2.
A risk-free, zero-coupon bond has 15 years to maturity. Which of the following is closest to the price per $100 of face value that the bond will trade at if the YTM is 7%?
A battery has an emf and an internal resistance r. When the battery is connected to a 25Ω resistor, the current through the battery is 0.55 A. When the battery is connected to a 48 Ω resistor, the current is 0.45 A. Find the emf of batter
Walker Laboratories, Inc. pays a $1.37 dividend every quarter and will maintain this policy forever. What price should you pay for one share of common stock if you want an annual return of 12.5% on your investment?
Assume a bank has $5 million in deposits and $1 million in vault cash. If the bank holds $1 million in excess reserves and the required reserves ratio is 8 percent, what level of deposits are being held?
What is the minimum temperature of the cold reservoir, where the heat addition to the system occurs? What would be the minimum temperature if the coefficients of performance is 6?
A bird lands on a bare copper wire carrying a current of 15 A. The wire is 8 gauge, which means that its cross-sectional area is 0.13 cm2. (a) Find the difference in potential between the bird's feet, assuming they are separated by a distance of 6
A 950 kg boat is traveling at 110 km/h when its engine is shut off. The magnitude of the frictional force fk between boat and water is proportional to the speed v of the boat.
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