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Q1) In most applications continuous random variables represent counted data, whereas discrete random variables represent measured data.
Q2) For the random varisble x word random points out that value of x is determined by chance.
Q3) Mean of the random variable represents "theortical average" of the probability experiment nd sometimes is not possible outcome.
Q4) Area code consists of 3 digits. How many area codes are possible if
(a) There are no restrictions
(b) The first digit cannot be a 1 or 0
(c) Determine the probability of choosing the area code at random which ends in the odd number if first digit cannot be 1 or 0?
Compute an F-statistic for each linear construct and determine its significance.
A certain random experiment can result in one of four different possible outcomes, which we'll call A, B, C and D.
You play a game with two possible outcomes. Outcome A has probability 0.4 and outcome B has probability 0.6. When B occurs you win $2.00; otherwise, you lose $1.00. What is your expected value for this game?
You find that a random sample of five microwave ovens has a mean repair cost of $75 and a standard deviation of $12.50. At α = 0.01, do you have enough evidence to support the repairer's claim?
Assuming the nurses surveyed were a random sample from the population of all nurses in the United States, we can use these data to test the null hypothesis H0 that there is no association between the row and column variables in this two-way table...
Suppose that the number of babies born during an hour at a hospital's maternity wing follows a Poisson distribution with a mean of 4 per hour.
Determine whether the method of delivering teaching influences adherence with antiretroviral therapy.
Create a 95% confidence interval for true mean.
For a t distribution with 16 degrees of freedom, find the area, or probability, in each region.
Research question: Are mean crash damages same for these 3 vehicles? Crash1 Crash Damage ($).
At the 0.05 significance level, can he conclude that number of absences has declined? calculate approximately the p -value.
If they must form an ethics subcommittee of 4 members, how many different subcommittees are possible?
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