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If he knows that the measurements follow a normal distribution and the standard deviation for this procedure is 1.2 degrees, what is the confidence interval for the population mean at a 95% confidence level?
What is the level of measurement for there is no significant difference between marital ages of men and women? and ther eis a significant difference between marital ages between men and women.
WNAE, an AM station totally dedicated to deliver news, found that while the Distribution of listeners tune in the station follows the normal Distribution.
The production line that packages boxes of raisins at a snack food manufacturer will be considered operating properly if the average weight of the boxes of raisin is 3.5 ounces with a standard deviation of 0.3 ounces.
Find the value of Proportion and construct a 90% confidence interval for proportion.
The size of the home (reported below in thousands of square feet) increases the selling price (reported in $ thousands) also increases?
John runs a computer software store. He counted 130 people who walked by his store in a day, 59 of whom came into the store. Of the 59, only 24 bought something in the store.
Using your own experience, estimate the probability the local weather forecast is correct. Explain the rationale behind your estimate.
Annual family dental expenses for the families of a random sample of ten employees of a company are given below. You can assume the family dental expenses for the employees of the company are normally distributed.
Write a hypothesis that you might test to compare two or more samples in your example. Indicate which hypothesis test you would use and the samples you would select.
Do you think they can be solved explicitly? Take the derivative of the gamma distribution and set it equal to zero and solve for alpha and beta to find the mle?
Estimate the true proportion of college students who believe in the possibility of haunted places with 99% confidence. According to Time magazine, 37% of americans believe that places can be haunted.
N = 500 is to be selected from the population. What is the probability that the sample proportion, will be within ± 3 percentage points of the true p, i.e., Pr{0.42 ≤ ≤ 0.48}?
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