NOTE:$$ USE CELL REFERENCES FROM C$45$ THROUGH C$49$ TO ANSWER PROBLEMS $2$ THROUGH $8!2.$For a mean of $7\%$ and a standard deviation of $8\%,$ there would be$$ an approximate $68\%$ chance of a return between what lower number and$$ what higher number? $3.$ For a mean of $7\%$ and a standard deviation of $8\%,$ there would be$$ an approximate $95\%$ chance of a return between what lower number and$$ what higher number? $4.$ For a mean of $7\%$ and a standard deviation of $8\%,$ there would be$$ an approximate $99\%$ chance of a return between what lower number and$$ what higher number? $5.$ For a mean of $7\%$ and a standard deviation of $8\%,$ chance of return between $7\%$ and $15\%?6.$ For a mean of $7\%$ and a standard deviation of $8\%,$ chance of return between $15\%$ and $23\%?7.$ For a mean of $7\%$ and a standard deviation of $8\%,$ chance of a return between $23\%$ and $31\%?8.$ For a mean of $7\%$ and a standard deviation of $8\%,$ chance of a return above $31\%?$ NOTE:$$ The probabilities in this problem are approximate.$$ The corresponding precise probabilities are $68\mathrm{.}26\%,95\mathrm{.}44\%$ and $99\mathrm{.}74\%.$ APPROXIMATE AREAS UNDER THE CURVE ARE AS FOLLOWS TOTAL AREA $100\%$ AREA BEWEEN $+1$ AND $-1$ $68\%$ AREA BEWEEN $+2$ AND $-2$ $95\%$ AREA BEWEEN $+3$ AND $-3$ $99\%$ MEAN $7\mathrm{.}00\%$ $8\mathrm{.}00\%$ PROBLEM $2$ LOWER NUMBER $$ PROBLEM $2$ HIGHER NUMBER $$ PROBLEM $3$ LOWER NUMBER $$ PROBLEM $3$ HIGHER NUMBER $$ PROBLEM $4$ LOWER NUMBER $$ PROBLEM $4$ HIGHER NUMBER $$ PROBLEM $5$ CHANCE OF RETURN BETWEEN $7\%$ AND $15\%$ PROBLEM $6$ CHANCE OF RETURN BETWEEN $15\%$ AND $23\%$ PROBLEM $7$ CHANCE OF RETURN BETWEEN $23\%$ AND $31\%$ PROBLEM $8$ CHANCE OF RETURN ABOVE $31\%$