# Question: The lengths in feet of a random sample of suspension

The lengths (in feet) of a random sample of suspension bridges in the United States, Europe, and Asia are shown. At α = 0.05, is there sufficient evidence to conclude that there is a difference in mean lengths?

Assume that all variables are normally distributed, that the samples are independent, and that the population variances are equal. Also, for each exercise, perform the following steps.

a. State the hypotheses and identify the claim.

b. Find the critical value.

c. Compute the test value.

d. Make the decision.

e. Summarize the results, and explain where the differences in the means are.

Use the traditional method of hypothesis testing unless otherwise specified.

Assume that all variables are normally distributed, that the samples are independent, and that the population variances are equal. Also, for each exercise, perform the following steps.

a. State the hypotheses and identify the claim.

b. Find the critical value.

c. Compute the test value.

d. Make the decision.

e. Summarize the results, and explain where the differences in the means are.

Use the traditional method of hypothesis testing unless otherwise specified.

## Relevant Questions

A researcher wishes to see whether there is any difference in the weight gains of athletes following one of three special diets. Athletes are randomly assigned to three groups and placed on the diet for 6 weeks. The weight ...A research organization tested microwave ovens. At α = 0.10, is there a significant difference in the average prices of the three types of oven? A computer printout for this exercise is shown. Use the P-value method and the ...The data consist of the weights in ounces of three different types of digital camera. Use α = 0.05 to see if the means are equal. Do a complete one-way ANOVA. If the null hypothesis is rejected, use either the Scheffé or ...Three popular fast-food restaurant franchises specializing in burgers were surveyed to find out the number of calories in their frequently ordered sandwiches. At the 0.05 level of significance can it be concluded that a ...In a two-way ANOVA, variable A has six levels and variable B has five levels. There are seven data values in each cell. Find each degrees-of-freedom value. a. d.f.N. for factor A b. d.f.N. for factor B c. d.f.N. for factor A ...Post your question