Answer is A. 7,200. Since one sponge is equal to $0.12 and she got a total of $864.00, then you just have to divide $0.12 with $864.00 to get the total of sponges.
The interval corresponds to the part of the distribution lying within 2 standard deviations of the mean (since 500-2*100=300 and 500+2*100=700). The empirical rule states that approximately 95% of the distribution is expected to fall in this range.
corresponds to the part of the distribution lying within 2 standard deviations of the mean (since 500-2*100=300 and 500+2*100=700). The empirical rule states that approximately 95% of the distribution is expected to fall in this range.