Statistics help (finding preview size)?
"the monthly credit card debts for individual accounts are normally distributed beside a standard deviation of 71 dollars. A researcher wants to estimate the close-fisted monthly credit card debt for all individual depiction. Find the sample size needed to assure next to 95.44 percent confidence that the sample aim will not differ from the population mean by more than 3 unit."thanks, any give a hand is appreciated
Answers: large indication confidence intervals are used to find a region in which we are 100 (1-α)% confident the true attraction of the parameter is in the interval.
For roomy sample confidence intervals something like the mean you enjoy:
xBar ± z * sx / sqrt(n)
where xBar is the taster mean
z is the zscore for have α% of the data surrounded by the tails, i.e., P( |Z| > z) = α
sx is the preview standard deviation
n is the sample size
we are singular concerned with the error possession and the width of the interval.
z * sx / sqrt(n) = w
n = (z * sx / w) ^ 2
the z ranking for a 95.44% CI is z = 1.999077
n = (1.999077 * 71 / 3) ^ 2
n = 2238.377
the sample size must be integer valued and you nick the ceiling
n = 2239
Sorry too early for me..Brain not warm up yet..
In accounting, which accounts as a rule require an adjust entry (Details Below)?
is the answer A) saleries payable B) land C) Dana Cates, drawing D) accumilative depreciation E) unearned rent F) supplies near can be more than 1 answerAnswers: In accounting, which accounts NORMALLY require an adjusting entry is the answer,( near can be more than 1 answer)
A) salaries payable,
D) accumulative depreciation
E) unearned rent
F) supplies
Do you think that Jérome Kerviel is a new Christophe de Roccancourt? Do you admire him or do you hate him?Why?
Answers: I dont think hes the new one at all. He is his own person. II feel bad for him because of what happened. I font really like him or dislike him.