The composition of the air in an artificial environment is controlled by a computer chip which makes decisions based upon information received from sensors in the chamber. Comp A 27.6 27.9 26.3 28.5 27.9 25.4
Comp B 27.9 28 27.1 28.1 28 26.9
Tests are made with sensors purchased from companies A and B. The following data represent recorded percentages of oxygen taken in pairs according to the number of people in the chamber:
Use the sign test to determine whether the median percentages are different at the 5% significance level.

The owners of four companies competing for a contract are shown in the table below. if a report is released that advocates company b, which of the people having funded the report should result in the most skepticism? company owner of company company a jake adams company b company c company d debby smith henry rose rhonda baker o a. jake adams o b. rhonda baker o c. debby smith o d. henry rose

Collin did the work to see if 10 is a solution to the equation r/4=2.4

Acell phone company offers two plans to its subscribers. at the time new subscribers sign up, they are asked to provide some demographic information. the mean yearly income for a sample of 40 subscribers to plan a is $45,000 with a standard deviation of $9,200. for a sample of 25 subscribers to plan b, the mean income is $64,300 with a standard deviation of $7,100. at the 0.025 significance level, is it reasonable to conclude the mean income of those selecting plan b is larger? assume unequal population standard deviations. hint: for the calculations, assume the plan a as the first sample. what is the decision rule? (negative amount should be indicated by a minus sign. round your answer to 3 decimal places.) compute the value of the test statistic. (negative amount should be indicated by a minus sign. round your answer to 2 decimal places.) what is your decision regarding h0 ? reject h0 fail to reject h0 compute the p-value. less than 0.01 between 0.01 and 0.025 between 0.025 and 0.05 between 0.05 and 0.10 greater than 0.10