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In order to determine whether to pitch a new advertising campaign more toward men or women, an advertiser provided each couple in a random sample of 500 married couples with a new type of TV remote control that is supposed to be easier to find when needed. Of the 500 husbands, 62% said that the new remote was easier to find than their old one. Of the 500 wives, only 54% said the new remote was easier to find. Let p1 be the population proportion of married men who think that the new remote is easier to find, and let p2 be the corresponding proportion of married women.Can the statistic pˆ1 - pˆ2 = 0.62 - 0.54 be used to test
made with aluminum wire, 105 met the specification.
H0 : p1 - p2 = 0 versus H1 : p1 - p2 =
0? If so, per-
Find a 95% confidence interval for the difference in the proportions of units that meet the specification be- tween units with gold wire and those with aluminum wire.
Some details of a contract negotiated during the year with the labor union are different from the outline of the contract included in the minutes of the board of directors.
jack owns an auto repair shop, specializing in European cars. With three full-time mechanics, Jack's shop repairs/services 15 cars per week. Each worker is paid $500 per week. By hiring another mechanic, at the same salary, he can increase his wee..
For this demand curve, over what range of prices is demand inelastic?
Over the one-month period, will total fare revenue increase or decrease? What about the two-year period?
If I rises to 100 (we discuss what determines I in later chapters), what will the effect be on the equilibrium income?
Explain how a Federally funded project might be wasteful from a national perspective, yet still be highly beneficial for a specific city or state.
A company currently sells 45 units a week at $210 per unit. The marginal cost of each unit is $155. The company is considering increasing the price by 2.6%. The company believes that this price discount will increase its economic profits.
If your nominal income rose by 2.8 percent and the price level rose by 3.8 percent in some year, by what percentage would your real income (approx) increase If your nominal income rose by 2.8 percent and your real income rose by 1.1 percent in som..
Suppose the consumption function is given by C = a + bYd where a and b are constants (b is the marginal propensity to consume), and Yd is disposable income, equal to Y - T. Taxes vary with income and are equal to t0 + tY where t0 and t are constant..
Knappland is at Y = Yn , ue = uen , and P = Pe. President Ewe is concerned about the upcoming election. He pushes tax cuts through the legislature. a. Use the AS-AD to illustrate the effects of the income tax cut
A furniture company has compiled the year's revenue expectations and probabilities: Sales Probabilities 240 .05 280 .10 320 .70 360 .10 400 .05 Calculate a) Expected revenue b) Standard deviation c) Coefficient of variation
Abby consumes only apples. In year 1, red apples cost 1$ each, green apples 2$ each, and Abby buys ten red apples. In year 2, red apples cost $2, green apples cost $1, and Abby buys 10 green apples.
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