Calculate the sample size required for a confidence interval

Calculate the sample size required for a confidence interval estimate of a population mean where the desired margin of error (e) is 5, the assumed population standard deviation (sigma) is 33.8463, and the confidence level is 95% (critical z=1.96),The answer is 177 but I would just like to have instructions on how to get to this answer.,

A random sample of 15 miniature Tootsie Rolls was taken from a

A random sample of 15 miniature Tootsie Rolls was taken from a bag. Each piece was weighed on a very accurate scale. The results in grams were as given in the table at right.,(a) Construct a 90 percent confidence interval for the true mean weight. (b) What sample size would be necessary to estimate the true weight with an error of ± 0.02 grams with 90 percent confidence? (c) Discuss the factors which might cause variation in the weight of Tootsie Rolls during manufacture. ,,,X,3.087,3.131,3.241,3.241,3.270,3.353,3.400,3.400,3.408,3.411,3.435,3.437,3.437,3.439,3.477,

In 1988, when Sherry was 55 years old with an additional life

In 1988, when Sherry was 55 years old with an additional life expectancy of 20 years, she,purchased a single life annuity for $200,000 that was to pay her $15,000 per year for life,starting in 1989. Sherry just received her $15,000 payment for 2011. How much of the,$15,000 must Sherry include in income?,a. 0,b. $5,000,c. $10,000,d. $15,000

Billy’s father owns a controlling interest in Big Top

Billy’s father owns a controlling interest in Big Top Corporation. Billy needed $20,000 to pay,a gambling debt and the corporation made a loan to Billy at no interest for the $20,000. This,transaction can be characterized as:,a. A gift loan to Billy,b. An employment-related loan,c. An arm’s length loan,d. A disguised dividend to the father

25) If a conflict of interest arises prior to entering into a

,25) If a conflict of interest arises prior to entering into a business contract, the parties should,, A. determine the type of conflict and if disclosure of the conflict of interest is sufficient to proceed with the contract, B. stop negotiations immediately and contact a mediator to negotiate the terms of the contract, C. cease and desist because all conflicts of interest are irreconcilable,, D. commence a cooling-off period until the conflict is removed,,

30) Which of the following is an approach to dealing with a

30) Which of the following is an approach to dealing with a bottleneck?,, A. Move things to a faster bottleneck , B. Keep a buffer inventory in front of it to insure that it always has something to work on, C. Use Johnson’s sequencing rules on bottleneck operations , D. Don’t worry about the bottleneck; it will take care of itself , E. Pay an incentive bonus to workers on the bottleneck operation ,