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The weights of a random sample of 10 firs ants was the following ( in milligrams):
1.2 3.1 3.9 2.3 3.4 8.0 4.8 3.9 1.9 7.1
a) Use the data to find a point estimate of the population mean weight of fire ants. What estimator did you use?
b) Use the data to find a point estimate of the population variance. What estimator did you use?
c) Use the data to find a point estimate of the population standard deviation. What estimator did you use?
d) Create a 90% confidence interval for the mean weight of fire ants.
in a survey of 2365 adults a proportion of 1320 said they worry about zombies.a. find p and q.b. with c0.99 construct
Suppose the time necessary to process an application for a license plate for a newly purchased vehicle is normally distributed with mean of 6 minutes and standard deviation of 1.5 minutes.
Find the probability that the age of a randomly selected CEO will satisfy each condition - The average teacher's salary in timbucktoo is $29,863. Assume a normal distribution with a standard deviation of $5000.
a researcher was interested in determining the effect of an experimental drug on the lifespan of laboratory rats.
How many integers are there between 5 and 14? How Many rational numbers are there between 5 and 14?
What is the probability that a simple random sample of 40 male graduates will provide a sample mean within $10,000 of the population mean, $168,000 (to 4 decimals)?
Given that the test has a mean of 1000 and a standard deviation of 200 what is the lowest possible score needed for acceptance?
In a test of the independence of two variables, one the variables has two possible categories and the other has three possible categories.
We are interested in testing to find out whether the variance of the population is vitally more than 0.003
The country clerk wants to estimate the protection of retired voters who will need special election facilities. suppose a sample of 400 retired voters was taken. If 150 special election facilities, calculate an 80% confidence for the population pr..
If a complete failure occurs, calculate the probability that the fault occurred in:
computing the z scores for the given data.a population consists of the following n 5 scores 0 6 4 3 and 12.1. compute
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