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Bilingual Doctors
A survey shows that in one year, the average number of bilingual doctors in a hospital was 42.
Assume that the standard deviation is 12 and the number of bilingual doctors in a hospital is normally distributed. Include an appropriately labeled and shaded Normal curve for each part.
a. What percentage of hospitals have between 40 and 45 bilingual doctors?
b. What percentage of hospitals have between 45 and 50 bilingual doctors?
Calls arriving at a telephone switch are either voice calls (v) or data calls (d). Each call is a voice call with probability p, independent of any other call. Observe calls at a telephone switch until you see two voice calls.
Explain the decisions you made in the third cycle of the simulation. State the reasons for your decision and include an explanation of why you did not follow the recommendations of the stakeholders.
Give an example representing a discrete probability distribution and a continuous probability distribution. Explain why your choice is discrete and continuous.
suppose a baseball player had 205 hits in a season. in the given probability distribution the random variable x
what is the probability that in the sample fewer than 35 are willing to spend extra for products and services from
The company will replace any printer that fails during the guarantee period. How long should speedy jet printers be guaranteed if the company wishes to replace no more than 15% of the printers?
The researchers also considered a model that included all possible interactions between the control variables and the performance behavior variables. Write the equation for this model for E(y).
Given events A and B each have nonzero probability and are mutually exclusive, are they independent? Prove your answer logically.
Write the four parts for a one-sided, right-tailed hypothesis test concerning the population variance with a = 0.01.
The multivariate normal random variables X I , X2, . Xk are mutually independent if and only if they are pairwise uncorrelated. The proof consists of invoking Theorem 2.10 and using the moment generating function (Eq. 2.97) (see Exercise 2.1).
How did the settlement of Texas by Americans lead to the independence of Texas from Mexico? Why did people head west to Utah, Oregon, and California? What effect did that movement have on the country?
a nursing school wants to estimate the true mean annual income of its alumni. it randomly samples 120 of its alumni.
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