Confidence interval for the population proportion
In 2010, a Gallup poll surveyed 1016 households in the U.S about their pets. Of those surveyed, 599 said they had at least one dog or cat as a pet. Find and interpret the 95% confidence interval for the population proportion.
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A torsion test specimen has a radius = 25 mm, wall thickness = 3 mm, and gage length = 50 mm. In testing, a torque of 900 N-m results in an angular deflection = 0.3°. Determine: (a) the shear stress, (b) shear strain, and (c) shear modulus, as
You have $100,000 to invest in a portfolio containing Stock X and Stock Y. Your goal is to create a portfolio that has an expected return of 11.22 percent.
Suppose heat is transferred into the gas, so that it is 303 degrees K at location 2. Assuming the pressure is constant, what will be velocity at location 2?
Burke's Corner currently sells blue jeans and T-shirts. Management is considering adding fleece tops to its inventory to provide a cooler weather option. The tops would sell for $49 each with expected sales of 3,600 tops annually.
Bubba Ho Tep Company reported net income of $300 million for the most recent fiscal year. The firm had depreciation expenses of $125 million and capital expenditures of $150 million.
You are trying to estimate the number of CSN students with iPhones. A random sample of 130 students reveals that 65 of them have an iPhone. Estimate the percentage of all CSN students who have iPhones with 95% confidence.
The brass rod has a cross sectional area of 20.0 cm2 and the aluminum rod has a cross sectional area of 30.0 cm2. What is the heat flow from the hot temperature to the cold temperature?
A bank branch wants to estimate the proportion of all customers who visit the bank primarily to use the outdoor ATM. In a random sample of 300 customers, 223 had come to the branch primarily to use the ATM. Estimate the proportion of all customers
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