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Q1) Owner of Britten's Egg Farm wishes to evaluate the mean number of eggs laid per chicken. Sample of 20 chickens illustrates they laid the average of 20 eggs per month with standard deviation of 2 eggs per month.
i) Determine the value of population mean? What is the best evaluate of this value?
ii) Describe why we require to use the t distribution. What supposition do you require to make?
iii) For a 95 percent of confidence interval. Determine the value of t?
iv) Create the 95 percent confidence interval for population mean.
v) Would it be sensible to conclude that population mean is 21 eggs? What about 25 eggs?
Let x be average number of employees in group health insurance plan and y be average administrative cost as percentage of claims. Determine sample correlation coefficient.
For value 10,40,20,50 and 40, value of arithmetic mean is? Simplest measure of dispersion is the Standard deviation, variance, Quartile deviation.
No, there is not enough information to refuse hypothesis that proportion of male students who live on campus and proportion of female students who live on campus are same as the test value -1.65 is inside acceptance region (-1.96,1.96).
Number of rescue calls received by rescue squad in city follows a Poisson distribution with mu = 2.83 per day. Squad can handle at most four calls a day. Determine the probability that squad will be able to handle all calls on a particular day?
Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
Is it reasonable for the manufacturer to claim that the drill bits will last 2.5 hours?
Determine a 95% confidence interval for mean amount spent by all Internet shoppers.
If circuit switching is utilized, how many user can this access link support?
The mean maximum oxygen uptake for elite athletes has been found to be 80 with a standard deviation of 8.1. Assume that the distribution is approximately normal.
At 95% confidence, test to determine if more than 21% of the population will like the new soft drink.
Which of the following(s) can be considered (a) variable(s)?
Construct the 90% confidence interval for the true population proportion of all voters in the state who favor approval.
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