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Unknown to a quality-control inspector, 20% of a very large shipment of electric switches are defective.
The inspector has been told to reject the shipment if, in a sample of 15 switches, 2 or more are defective. What is the probability that the shipment will be rejected?
Given same values n=20, p=0.6, and x=17, calculate probability of x successes in n independent trails of experiment.
A traffic study at one point on an interstate highway shows that vehicle speeds are normally distributed with a mean of 61.3 mph and a standard deviation of 3.3 mph.
the average math sat score for males was 519 with a standard deviation of 105. for females avg math score was 484 with
let x be the number of trials required to obtain a success where p is the probability of success on each trial. the
How do you write a statistical analysis in which the emphasis is to compare the difference between the body mass index (BMI) values of men and women.
a process for manufacturing an electronic component is 1 defective. a quality control plan is to select 100 items from
Vitamin A is required for good health. You conduct a study and find that as vitamin A intake increases, certain health problems decrease.
(a) State the null and alternative hypothesis (b) Give test statistic and p-value (c) Do these data provide evidence that metal tagged penguins have a later mean arrival time, yes or no?
State the null and alternative hypothesis if the average electric bill for residents of White Pine Estates exceeds $52.98 per month.
(a) Test for the normality of the data (b) Do the IQs of students at the school run above the national average at α = 0.01?
dizio tv company has recently invested in manufacturing processes to enhance the quality of their products. in testing
A survey is being planned to determine the mean amount of time corporation executives watch television. A pilot survey indicated that the mean time per week is 12 hours, with a standard deviation of 3.0 hours.
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