Arecent study examined the association between high blood pressure and increased risk of death from cardiovascular disease. there were 2676 men with low blood pressure and 3338 men with high blood pressure. in the low-blood-pressure group, 21 men died from cardiovascular disease; in the high-blood-pressure group, 55 died. a. compute the 95% confidence interval for the difference in proportions. b. do the study data confirm that death rates are higher among men with high blood pressure? state hypotheses, carry out a significance test, and give your conclusions.

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or