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There is a normal distribution with a mean of 460 seconds and a standart deviation of 40 seconds. Find the probability that a randomly selected boy in secondary school can run the mile in less than 368 seconds
What is the probability of selecting a store at random and finding it has both a pharmacy and a floral shop?
Mmore than 520gms, within 10grms of the stated weight & weight that only 5% of bottles contain less than this weight?
Find the probability that there are enough seats for all the passengers who show up. How many passengers are expected to show up?
Post a behavioral research situation that could use a Pearson coefficient research study and a chi square research study to the Discussion Area.
Think about a density curve that consists of two line segments. The first goes from the point (0, 1) to the point (0.7, 1). The second goes from (0.7, 1) to (0.9, 2) in the xy-plane. What percent of observations fall below 0.70?
Happy Hector and Party Paul are each having a catered party at Fun Factory. Hector's party is in the hall and Paul's party is on the Patio.
Using the Wilcoxon Signed-Ranks Test. Paired sample data and use the Wilcoxon signed-ranks test to test the claim that the matched pairs have differences that come from a population with a median equal to zero.
What does the intercept mean in this context? What is the estimated percent decline in visual field per year?
Which of following statements would be right concerning a twotail test at 0.05 level of significance? We can conclude that average cottage cheese consumption in America is at least 0.705 pound more or less than 2.75 pounds per person per year.
A hypothesis is being conducted. The p-value was found to be 0.0768. For which of the following levels of significance will the null hypothesis be rejected?
The underlying data are in file XR10033. Identify and interpret the p-value for the test. Using the 0.025 level of significance, what conclusion will be reached?
Suppose that in order to satisfy legal requirements, a meat pie manufacturer may only produce .2% of pies below a weight of 750grams. If the preceding holds and if the weight of all pies is normally distributed with a standard deviation of 50 gram..
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