Let p1 be the proportion of residents in Country A coping with depression, and let p2 be the proportion of residents in Country B coping with depression. What is the null hypothesis for a test to determine whether Country A has a greater proportion of residents coping with depression than Country B? a. H0: p1âp2>0
b. H0: p1âp2<0
c. H0: p1âp2=0
d. H0: p1âp2â 0

H0 : p1 = p2

Step-by-step explanation:

Null Hypothesis is the general default statement, stating no difference between phenomena.

To test whether country A has higher proportion of residents coping with depression -

Null [ H0 ] : Proportionate depressed people are equal. p1 = p2

Alternate [ H1 ] : Proportionate depressed people in country A >  in country B

p1 > p2

(a) {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …}

(b) $59 398

step-by-step explanation:

(a) the annual sequence of profits

aₙ = a₁rⁿ⁻¹

the model for the sequence of profits is {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …} .

(b) profit after 15 yr

  a₁ = $ 30 000

  r = 1.05

a₁₅ = 30 000 × 1.05¹⁴

a₁₅ = 30 000 × 1.979 93

a₁₅ = $59 398

the profit in year 15 will be $59 398.