Sketch a graph that includes the distribution of x

Assignment Help Basic Statistics

Reference no: EM131432478

Marketing and Consumer Behavior The Carpet Corner in Gladstone, Missouri, offers a variety of carpets, wood flooring, and tiles. Sales records indicate that the mean amount of carpet installed in a wall-to-wall carpeted residential home by crews from this store is 1250 square feet. The store manager, Frank Vida, believes that when there is a sale, customers translate the savings into carpeting a larger area. A random sample of 45 wall-to-wall carpet purchases was selected during a sale. The sample mean was x^‾ = 1305 square feet; assume that σ = 155 square feet.

a. Conduct a one-sided, right-tailed test of H0: μ = 1250 versus Ha: μ > 1250. Is there any evidence to suggest the true mean square footage is larger during a sale? Use a = 0.01.

b. Find the probability of a type II error if the true mean square footage during a sale is μa = 1330; that is, find β(1330).

c. Carefully sketch a graph that includes the distribution of X if μ = 1250 and if μ = 1330. Shade in the areas that correspond to the probability of a type I error (0.01) and to the probability of a type II error found in part (b).

Reference no: EM131432478

Questions Cloud

Conduct a one sided left tailed hypothesis test : Conduct a one-sided, left-tailed hypothesis test to see whether there is any evidence that the true mean weight of the pretzel packages is less than 15.5 ounces. Use a 5 0.01 and assume σ = 0.26.

Evidence to suggest the mean depth is less than 344 meters : Conduct a hypothesis test to determine whether there is any evidence to suggest the mean depth is less than 344 meters. Use a = 0.01.

Quality of life in cities : Find one article from the library or credible Internet site that focuses on quality of life in a specific city or in cities generally - Write an annotation in the box below. An annotation summarizes the article and its point of view. It can be thou..

Conduct a two sided hypothesis test : Conduct a two-sided hypothesis test to determine whether there is any evidence the mean monthly water usage is different from 714 cubic feet. Use a = 0.05.

Sketch a graph that includes the distribution of x : Carefully sketch a graph that includes the distribution of X if μ = 1250 and if μ = 1330. Shade in the areas that correspond to the probability of a type I error (0.01) and to the probability of a type II error found in part (b).

Find the probability of a type ii error : Is there any evidence to suggest the true population mean moisture content is greater than 12%? Use a = 0.01.- Find the probability of a type II error if the true population mean moisture content is 12.2%; that is, find β(12.2).

How have inflation and interest rates affected the nations : How have inflation and interest rates affected the nations exchange rate with other currencies? What impact has the country?s exchange rate had on its imports and exports?

What is intellectual property : QUESTION 1: What is intellectual property? Why is it a valuable asset for the owner? How are intellectual property rights acknowledged and protected?

Produce a visual effect to evoke an emotional reaction : Choose any scene from Brokeback Mountain. How did the cinematographer use either color or moving cameras to produce a visual effect to evoke an emotional reaction for the audience member in this scene?

User Account

All Pages