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A survey was carried out in a state among the doctors belonging to the rural health service cadre (500 doctors) and among the medical education director's cadre (300 teaching doctors). They were asked a question would it be acceptable to you. If the government propose to hire all the doctors on a fixed periods contractual basis? The doctors were to answer either as acceptable or not acceptable. there was no third category undecided the following was the data compiled in a cross tabulated format. Test an appropriate hypothesis using a 5 percent level of significance.
Table of Observed Frequencies
Cadre Acceptable Not Acceptable Total
Rural Cadre 195 305 500
Teaching Cadre 140 160 300
Total 335 465 800
A bakery was selling eight types of cake and a customer wished to purchase two of them.
1. A distribution of scores is normally distributedwith a mean??= 85and a standard deviation s=4. If one score is randomly sampled fromthe distribution, what is the probability that itwill be greater than 96, between 90 and 97 and less than 88?
A recent study claimed that 15% of all eighth- grade students are overweight. In a sample of 80 students, 9 were found to be overweight. At a= 0.01, is there enough evidence to reject the claim using critical values?
Knowledge questions were coded as answered correctly or incorrectly. This is what level of measurement?
it is thought that prehistoric indians did not take their best tools pottery and household items when they visited
Let X1,..., Xn be a random sample from a Poisson distribution with parameter λ. Derive a (1 - α)100% large sample con?dence interval for λ.
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Do these results suggest that the racial makeup of the faculty members is different from that of the students? (Use the .05 significance level.) Use the five steps of hypothesis testing and explain your findings.
Study have in distinguishing between case-fatality rates in 1990 and 2000-2005 if a two-sided test with significance level .05 is planned? B. How large a sample is needed in the previous problem to achieve 90% power?
The proportion of all births in the United States that were Caesarian deliveries in 2002 was 0.26. One particular county found that 35,600 of its 143,000 births
Given the results shown here, and using the 0.025 level of significance, can we conclude that the age category of the shopper is independent of the nature of the greeting he or she receives upon entering the store?
The data were analyzed as a randomized block design with the 16 infants representing the blocks and the two sentence types representing the treatments. Do you agree with this data analysis method? Explain
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