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Suppose that a random sample of 100 public owner controlled companies in New Zealand is found to give a mean audit delay of =82.6 days, and assume that ? equals 33 days. Calculate a 95% confidence interval for the population mean audit delay for all publice owner-controlled companies in New Zealand.
class limits 20-26 27-33 34-40 41-47 48-54 55-61frequency 7 12 9 4 2 11. what is the mean of distribution?2. what is
Explanation on what is the logic behind using the sum of the products of deviation scores as the numerator of the formula for the correlation coefficient?
A normal curve with a mean of 15.0 gal and standard deviation of 0.1 gal. What is the probability that a randomly selected tank will hold.
A 95% confidence interval for the proportion of all adults who bought a lottery ticket in the past year is (assume Gallup used an SRS)
On a police sergeants exam, the historical mean scored was 80 with a standard deviation of 20. Four offiers scored 195,175,191, and 189 respectively
using the company records for the past 500 working days the manager of a car dealership has summarised the number of
You had calculated the following measures of central tendency: the mean, the median, and the mean trimmed 25%. Which of these measures of central tendency will change when you correct the recording error?
A psycologist wants to research whether wearing cologne helps men attract women. What would be null hypothesis in this sturday and what would be the research hypothesis?
What linear transformation will change sixth grade scores x into new scores xnew= a+bx that have the desired mean and standard deviation?
With more then a million teachers set to retire we are seeing a record number of turnovers in the teaching profession.
Assume each shot is independent of the others. If she shoots 6 arrows, what's the probability of each result described below. Her first bull's-eye comes on the third arrow.
What does it tell you about the relationship between Age and Total Cholesterol Level and find the equation of the least squares line of regression for this data.
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