Artery disease. An article in the New England Journal of Medicine describes a randomized controlled trial that compared the effects of using a balloon with a special coating in angioplasty (the repair of blood vessels) compared with a standard balloon. According to the article, the study was designed to have power 90%, with a two-sided Type I error of 0.05, to detect a clinically important difference of approximately 17 percentage points in the presence of certain lesions 12 months after surgery.13 What fixed significance level was used in calculating the power? Explain to someone who knows no statistics why power 90% means that the experiment would probably have been significant if there was a difference between the use of the balloon with a special coating compared to the use of the standard balloon.

Add the mips assembly language instructions (after main: ) to complete the following (in this order). do not skip steps. use other registers as needed. actions: 1. initialize the register $s0 to 35 2. prompt the user to enter a number, read the number and then put it into register $s1 3. prompt the user to enter a number, read the number and then put it into register $s2 4. store the value in $s1 into the memory at address 0x10010000. 5. store the value in $s2 into the memory at address 0x10010004. 6. calculate the value of $s0 - $s1 $s2 and store the result in the memory at address 0x10010008. 7. print the following output each on its own line. you will need to determine the location of each of the strings from the beginning of the memory segment a. your name b. the value in address 0x10010000 c. the value in address 0x10010004 d. the value in address 0x10010008 8. exchange or swap the values in $s1 and $s2 9. set the value in $s0 to -$s0

Rebel technology maintains its records using cash-basis accounting. during the year, the company received cash from customers, $43,000, and paid cash for salaries, $23,500. at the beginning of the year, customers owe rebel $1,000. by the end of the year, customers owe $6,600. at the beginning of the year, rebel owes salaries of $5,600. at the end of the year, rebel owes salaries of $3,300. determine cash-basis net income and accrual-basis net income for the year.

Asupermarket has been experiencing long lines during peak periods of the day. the problem is noticeably worse on certain days of the week, and the peak periods are sometimes different according to the day of the week. there are usually enough workers on the job to open all cash registers. the problem is knowing when to call some of the workers stocking shelves up to the front to work the checkout counters. how might decision models the supermarket? what data would be needed to develop these models?