Amanufacturer of pharmaceutical products analyzes each batch of a product to verify the concentration of the active ingredient. the chemical analysis is not perfectly precise. in fact, repeated measurements follow a normal distribution with mean μ equal to the true concentration and standard deviation σ = 0.0067 grams per liter. three analyses of one batch give concentrations 0.8225, 0.8737, and 0.91 grams per liter.

the mean (±0.0001) of the measurements is .

the 95% confidence interval for μ (±0.0001) is .

2.

a laboratory scale is known to have a standard deviation of σ = 0.00103 grams in repeated weighings. scale readings in repeated weighings are normally distributed, with mean equal to the true weight of the specimen. three weighings of a specimen on the scale give (in grams) 3.414, 3.419, and 3.415.

the 95% confidence interval for the true weight is ± (±0.1).

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

answer: no

step-by-step explanation:

you are only given the cost not the amount of pounds.

answer: 1722

step-by-step explanation:

given: the mass of saturn=

the mass of mercury=

the number of times the mass of saturn is greater than the mass of mercury

hence, the mass of saturn is 1722 times greater than the mass of mercury.