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Question 1: The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 88 inches, and a standard deviation of 10 inches. What is the likelihood that the mean annual precipitation during 25 randomly picked years will be less than 90.8 inches?
Question 2: A final exam in Statistics has a mean of 73 with a standard deviation of 7.73. Assume that a random sample of 24 students is selected and the mean test score of the sample is computed. What percentage of sample means are less than 70
Question 3: A mean score on a standardized test is 50 with a standard deviation of 10. Answer the following
What is d, the difference between any 2 terms? Using the formuls for the nth term of a arithmetic sequence, what is 101st term?
Some students see a steady price, while others see regular sales that temporarily cut the price. Students are asked the price they would expect to pay. This is an example of?
You were hired to do the development work for the local high school. The school has asked you to create a program to store quiz grades for the students of a class.
Your consulting company has been hired by an airline to analyze data on passenger and luggage weights. The data refer to a 200 seat aircraft that is always full. You are given data that show that as a good approximation passenger weights W ~ N (150, ..
Results Show the results and details of the tted regression models in appropriate tables and possibly any relevant graphs. Provide an interpretation of the results and a comparison of the three techniques for modeling (gee, glmm,transition).
Find the probability that the average of those counts is more than 63.0 mosquitos per square meter. Assume that the variable is normally distributed.
Average electric use was studied.a previously known population standard deviation was 450KWH. a sample of 81 houses was studied and found to have a mean of 1858 KWH. Find the 95% confidence interval for the true mean.
In a bumper test, three types of autos were deliberately crashed into a barrier at 5mph, and resulting damage was estimated. five test vehicles of each type were crashed.
Ssample by constructing a histogram and finding the sample mean and standard deviation, are we investigating the sampling distribution of the mean? why or why not?
We recalculated our comparison of ideal number of children, this time only for women, separating them into two groups, those who indicated that they were "very happy" or "not at all happy" with life.
What should the average weight be if the production manager wants no more than 5% of the products to weigh more than 10 ounces and determine the probability of the sample average number of strokes being more than 5.0.
A newspaper conducted a statewide survey concerning a proposal to raise taxes to prevent budget cuts to education. The newspaper took a random sample (assume it is an SRS) of 1200 registered voters and found that 580 would vote to raise taxes. Let..
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