According to the Sait River Project (SRP). a supptier electricity to the greater

Question

According to the Sait River Project (SRP). a supptier electricity to the greater. Phoenix Area, the mean annual electric bill in 1984 was. $852.31 An economist wants I estimate the mean for last year. He takes a random sample of 18 SRP customers and collects he annual electric bill from each of the customer This economist found that the sample mean is $1725.61 and the sample standaid deviation is $222.45. a) Check and show all the necessary conditions. Construct a 95degree confidence interval Show all your works and explain your answer in terms of the problem Using completed sentences.

Explanation / Answer

Solution :-

Balanced reaction equation for first part

2NaOH(aq) + Pb(NO3)2(aq) ------ > Pb(OH)2(s) + 2NaNO3(aq)

Balanced reaction for the second reaction

Pb(OH)2(s) + 2NaOH(aq) --------- > Pb(OH)4^2- (aq) + 2Na^+(aq)

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