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A machine that manufactures automobile parts is estimated to produce defective parts 6 % of the time. If this estimate is correct, and 10 parts produced by this machine are randomly selected, what is the probability that more than 2 turn out to be defective? Round your answer to four decimal places.
The diameters of oranges in a certain orchard are normally distributed with a mean of 5.26 inches and a standard deviation of 0.50 inches.
The population of IQ scores forms a normal distribution with a mean of µ = 100 and a standard deviation of o = 15. What is the probability of obtaining a sample mean greater than M = 105.
It is the gallons of water processed at a plant, and the amount of lead removed from the water. A. Make a scatterplot to determine what kind of relationship there seems to be between the two variables. Use the percent of lead removed as the respon..
If sample mean is M=44. Is this sufficient to demonstrate significant effect? Again assume a Two-tailed test with a=0.05.
How would I go about finding a 95% confidence interval for the population mean if a sample of size 20 has a mean of 18.2 and a sample standard deviation of 3.6?
Nyobia had a population of 3 million in 1985. Assume that this country's population is growing continuously at a 5% annual rate and that Nyobia absorbs 40000 newcomers every year.
A random sample of students is selected, and each one is asked to try first brand A and then brand B, or vice versa with the order determined at random.
About 68% of the students at fairview community college favor a new policy regarding parking on campus. suppose that we are interested in the proportion of 45 students in a math class who favor the policy.
By how much does the standard error of x-bar change if the sample is increased to 100?
Ppopulation with a mean of 240 and standard deviation of 18. Find the mean & standard deviation of sample distribution of the mean?
Determine the completion time and standard deviation (σ) for project roundoff the standard deviation to the nearest hundredth: two decimal places.
A big part of regression analysis involves hypothesis testing. For example the t-score for b1 tests a hypothesis...what is the H0 and Ha for this hypothesis?
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