These 74 girls are an srs of all seventh‑grade girls in the school district. suppose that the standard deviation of iq scores in this population is known to be =11 . we expect the distribution of iq scores to be close to normal. the distribution's stemplot is given. 8 6 9 9 0 1 3 3 9 6 7 7 8 10 0 0 2 2 3 3 3 3 4 4 10 5 5 5 6 6 6 7 7 7 7 8 9 11 0 0 0 0 1 1 1 1 2 2 2 2 3 3 3 4 4 4 4 11 5 5 6 8 8 9 9 9 12 0 0 3 3 4 4 12 6 7 7 8 8 8 13 0 2 13 6
select the explanation that best answers whether or not there are departures from normality.
a. there is a departure from normality because the data looks approximately uniform.
b. there is no departures from normality because the data looks approximately bell‑shaped.
c. there is no departures from normality because the data looks approximately right‑skewed.
d. there is no departures from normality because the data looks approximately left‑skewed.
(b) estimate the mean iq score for all seventh‑grade girls in the school district, using a 98% confidence interval.
select an answer choice.
a. 107.44 to 114.02
b. 108.22 to 113.24
c. 108.63 to 112.83
d. 105.84 to 132.00

whats the question?

step-by-step explanation:

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.

chemists are often responsible for designing a chemical reaction and analyzing the products obtained from it. one significant part of designing a chemical reaction is determining the amount of each reactant that is needed and the amount of each product that will be produced. in order to do so, chemists use stoichiometry, the quantitative relationships between reactants and products.