Adata set lists weights (lb) of plastic discarded by households. the highest weight is 5.31 5.31 lb, the mean of all of the weights is x overbar x equals = 2.257 2.257 lb, and the standard deviation of the weights is s equals = 1.655 1.655 lb.

a. what is the difference between the weight of 5.31 5.31 lb and the mean of the weights?

b. how many standard deviations is that [the difference found in part (a)]?

c. convert the weight of 5.31 5.31 lb to a z score.

d. if we consider data speeds that convert to z scores between minus −2 and 2 to be neither significantly low nor significantly high, is the weight of 5.31 5.31 lb significant?

maybe showing the graph would

step-by-step explanation:

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i think asking google will you get the answer to that question

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

3

step-by-step explanation:

divide 13.5 by 9 to get the scale factor. it equals 1.5

2 * 1.5 = 3