Formulating the hypotheses

Assignment Help Basic Statistics

Reference no: EM1311581

A study found that, in 2005, 12.5% of U.S. workers belonged to unions (The Wall Street Journal, January 21, 2006). Suppose a sample of 380 U.S. workers is collected in 2006 to determine whether union efforts to organize have increased union membership.

a. Formulate the hypotheses that can be used to determine whether union membership increased in 2006.

H₀:

H_a:

b. If the sample results show that 52 of the workers belonged to unions, what is the sample proportion of workers belonging to unions (to 2 decimals)?

c. Complete the following, assuming an α level of .05. Compute the value of the test statistic (to 2 decimals).

d. What is the p-value (to 4 decimals)?

e. What is your conclusion?

Reference no: EM1311581

Questions Cloud

What is the equilibrium temperature of this system : A massless rod of length 1m has a 2.00 kg mass attached to one end and a 3 kg mass attached to the other. The system rotates about a fixed axis perpendicular to the rod that passes through the rod 30.0 cm from the end with the 3kg mass attached. The ..

Computation of profit maximizing level of output : In 1991, Brazil and Columbia united to form a coffee cartel and reduce coffee output. Suppose total costs for the cartel are:

Find the smallest particle size : Find the smallest particle size (density 2.65 grams per cubic cm) that will be removed in a horizontal grit chamber 10 meters long and 1.0 meter deep if the flow rate is 1000 cubic meters per hour. Suppose temperature is 25 ºC.

What impact would accepting government contract : There would be no variable marketing costs incurred on the government's units and show What impact would accepting the government contract have on March income?

Formulating the hypotheses : Formulate the hypotheses that can be used to determine whether union membership increased in 2006.

Suppose the same static friction coefficient : A uniform plank of length 5.8m and weight 229N rests horizontally on two supports, with 1.10 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 450N walk on the overhanging part of the plank be..

Computing percent of trucks logged or travelled : What percent of trucks logged more than 57,060 but less than 58,280 miles? What percent of Fords travelled 62,000 miles or less in the year?

Computing marginal and average product of labor : Suppose that a chair manufacturer is producing in the short run (with its existing plant and equipment). The manufacturer has observed the following levels of production corresponding to different numbers of workers:

Computation of price of the bond : Computation of price of the bond and what price should the existing bond be traded at when the new five-year bond issued

User Account

All Pages