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1. What is the required thickness for a Si02 mask used for selective phosphorus diffusion. The diffusion was performed at 1000 °C for 3 hours.
2. Find the dose in silicon for phosphorus that is implanted wi th an energy of 100 kcV with a 0.1 Lm SiO::, layer and peak concentration of 101 7 cm-3. Fmd the time requ i red for this implantation onto a 2" wafer using 2 µA of current.
The average score, in the sample, was 84 with a sample standard deviation of 3.5. The 95% confidence interval for the average examination score of the population of the examinations is?
How do hypothesis-testing procedures differ for the population mean when the population standard deviation is known or unknown? What is the relationship between two-sided hypothesis tests for means and confidence intervals?
(A) Which test is the most appropriate to analyze these data, and why is that test most appropriate? (B) What are an appropriate null and alternative hypothesis for this statistical test?
concert attandance depends on the weather. there are three possible types of weather on the day of the concert terrible
We have a card game with 52 cards, consisJng of 4 suits (Dia, Clu, Hea, Spa), the cards are numbered Ace-10, then J,Q, K in each suit.
based on the number of voids a ferrite slab is classified as either high medium or low. historically 5 of the slabs
a university found that 3 of its students withdraw from an introductory course without completing it. assume 10
A prof. can't decide how to vote on a tuition increase for the students at her univ. The incrase is supposed to pay for new student parking and there appears to be mixed feelings. The prof.
Then turn up cards from the top until the first ace appears. What is the expected value of the number of cards required to produce the first ace?
Are the events "Republican" and "30-44" independent? Justify your answer. Are the events "Democrat" and "65+" independent? Justify your answer.
a comparison between the average jail time of bank robbers and car thieves yielded the following results in yearsn180
we have an urn with two yellow and 3 green balls. we choose a ball randomly look at its color and return it into the
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