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Two urns contain coloured balls. urn 1 contains 4 blue, 3 green and 5 red balls. urn 2 contains 6 blue, 2 green and 3 red balls. a ball is selected at random from urn 1 and transferred to urn 2. a ball is then selected at random from urn 2. if the ball selected from urn 2 is red, what is the probability that the ball transferred from urn 1 was...(i)red?
24% of the students in the sample received and A. At the 1% signifiance level, the test hypothesis that more then 20% of the students received and A.
Patient does not have disease occurs 1% of the time. If a randomly selected individual is positive what is the probability that the individual has the disease?
What can we conclude from this summary, Which of the following statements is correct and In which of the following situations would permutation tests be suitable
Determine the probability that: a) Exactly 3 will have this mild side effect.
A college believes that 28% of applicants to that school have parents who have remarried. How large a sample is needed to estimate the true proportion of students who have parents who have remarried to within 5 percentage points with 95% confidenc..
The calculated value of F in a one-way analysis is 8.23. The numerator degrees of freedom and denominator degrees of freedom are 4 and 8, respectively.
Test to see if the mean cell phone bill has changed since 2004. Use a .05 level of significance for the test.
There are 6 children in a family. The number of children defines a population. The number of simple random samples of size 2 that are possible equals:
High School GPA is normally distributed with a mean of 3.06 and a standard deviation of 0.40. The probability of a randomly chosen student having a HS GPA between 3.54 and 3.80 is
The probability that house sales will increase in the next 6 months is estimated to be 0.25. The probability that the interest rates on housing loans will go up in the same period is estimated to be 0.74. The probability that house sales or intere..
Discuss the factors which might cause variation in the weight of Tootsie Rolls during manufacture.
While in July the mean high temperature is 74oF and the standard deviation is 8oF. In which month is it more unusual to have a day with a high temperature of 55oF?
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