Suppose that shoe sizes of american women have a bell-shaped distribution with a mean of 8.47 and a standard deviation of 1.5 . using the empirical rule, what percentage of american women have shoe sizes that are no more than 11.47 ? do not round your answer.

Solution: We are given that the shoe sizes of American women have a normal distribution, with mean, standard deviation

We have to find the percentage of American women whose shoe size's are not more than 11.47 P(x<11.47).

We need to first find the z-score.

Now we have to find . Using the empirical rule, we know that 97.5% data lies below 2 standard deviations above mean.

Therefore, using the empirical rule, 97.5% of American women have shoe sizes that are no more than 11.47.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

step-by-step explanation:

3024 rhe base is what up in worry about