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A large tank of fish from a hatchery is being delivered to a lake. The hatchery claims that the mean length of fish in the tank is 15 inches and the standard deviation is 2 inches.
A random sample of 36 fish is taken from the tank.
Let x bar be the mean sample length of these fish. What is the probability that x bar is within 0.5 inch of the claimed population mean?
Show all work. Then, provide a brief step by step explanation of process.
In the study of 15 taxi drivers, average experience was 11.2 years. Standard deviation was 2. At α = .10, is number of years' experience of taxi drivers really less than taxi company claimed?
question 1 there are 25 people in a room. what is the probability that at least two have the same birthday?question 2
Determine the mean number of times the machine was used per day.
Find the standard error of mean. Also establish an interval estimate around the sample mean using one standard deviation of the mean.
The Wall Street Journal recently ran an article indicating differences in perception of sexual harrassment on the job between men and women.
What do we mean by confidence intervals - provide an example that illustrates your answer. Suppose we were to apply 95% and 99% confidence to your study results.. how might your result differ and why?
Given this information we could use a Z test for two independent means and conclude that indeed the sales are different when the soup is a featured item.
A test is normally distributed with a mean of 40 and a standard deviation of 7. (a) What score would be needed to be in the 85th percentile?
poisson distribution in studying a rare disease researchers notice that there is a 1 in 1000 chance of a person
Why is it important to know the standard deviation for a given sample? What do researchers learn about a normal distribution from knowledge of the standard deviation?
The topic I am treating now is based on using qualitative analysis based on grounded theory to investigate the topic "Mature student studying at University".
Why do you think it is significant to describe both the measure of central tendency and the measure of dispersion when talking about a data set?
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