Scatter Diagram

Question

A fast food restaurant estimates that the mean sodium content in one of its breakfast sandwiches is no more than 920 milligrams. A random sample of 44 breakfast sandwiches has a mean sodium content of 925 with a standard deviation of 18 milligrams. At a=0.10, do you have enough evidence to reject the restaurant’s claim?

A. Write the claim mathematically

B. Identify the null and alternate hypotheses

c. find the critical values and identify the critical region

d. find the standardized test statistic

e. decide whether to reject or fail to reject the null hypothesis

f. interpret the decision in context of the original claim

Question

Arbitrarily select   eight people from your class. Do each of the following: (a)   Make a scatter diagram for the relation   between the number of letters in each   person’s first and last name; (b) figure   the correlation coefficient for the relation   between the number of letters in each   person’s first and last name; (c) figure   whether the correlation is statistically   significant (use the .05 significance level,   two-tailed); (d) describe the result in   words; and (e) suggest a possible interpretation   for your results.