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A mechanical assembly consists of a rod with a bearing on each end. the 3 parts are manufactured independently. The length of the rod has a mean of 12cm, and s.d of 0.004mm. The length of a bearing has mean of 2cm and s.d of 0.001mm. What are the mean and s.d of the total length of the assembly?
a busy restaurant determined that between 630 p.m. and 900 p.m. on friday nights the arrivals of customers are poisson
a company claims that a new commission policy has resulted in average weekly earning of pound380. a random sample of
suppose duration of human pregnancies are somewhat skewed with mean 263 days and standard deviation of 19 days.
WonderDrug Company wants to test the effectiveness of a new headache drug. What sampling technique (simple random, stratified random, cluster, convenience) is WonderDrug Company using in each of the following studies?
A currency trader observes that in the spot exchange market, 1 U.S. dollar can be exchanged for 9 Mexican pesos or for 111.23 Japanese yen. What is the cross-exchange rate between the yen and the peso
1. one single number digit is selected randomly a. list the sample space. b. what is the probability of each event?
a basketball team at a university is composed of ten players. the team is made up of players who play the position of
what is the t-test based on students t-distribution useful for?a. comparing values about the meanb. determining if the
the r.r. bowker company collects information on the retail prices of books and publishes the data in the bowker annua
What is the probability of finding exactly four watch soap operas?
Determine margin of error for confidence interval in (a)?
If we select a crew member at random, what is the probability the crew member earns:
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