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In a certain class, 21% of the students are left-handed. Suppose that a random sample of 66 students is selected. Find the mean number of left-handed students in the class.
A Private firm reports that 8% of the 2 million small businesses who apply for loan each year receive special interest rate (usually higher than market rate) because of high riskiness associated with small business.
Assume the data for the three groups are independent and the data are approximately Normal. The P-value is less than 0.01. The correct conclusion is that
the waiting time for patients at local walk-in health clinic follows a normal distribution with a mean of 15 minutes
containers arrive at a stocking station on a conveyor at the rate of five per minute. container weight is 25 kg.
create a drawing or plan for a 2 times 3 experimental design that would lend itself to a factorial anova. identify the
A man buys a car for £4500 and pays a deposit of 20 per cent. Interest is charged 2.5 per cent on the outstanding balance. He repays this balance over 24 months. How much is the monthly instalment (to the nearest penny)?
If 485 out of the next 500 orders are processed on the same day, would this prove that they are exceeding their goal, using α = .025?
in a recent survey of full-time female workers ages 22 to 35 years 46 said they would rather give up some of their
Estimating the Size of a Sample to Study
Assume that the population of hours worked per week by college graduates employed full-time is normally distributed with mean . Can we conclude that is greater than 40 hours? Use the .01 level of significance.
acceptance samplinga teletronix company purchases large shipments of fluorscent bulbs. they randomly select and test 24
find the value of z that would be used to test the difference between the proportions given the following. use g - h.
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