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The reliability of an electrical fuse is the probability that a fuse, chosen at random from production, will function under its designed conditions. A random sample of 1000 fuses was tested and x = 30 defectives were observed. Calculate the approximate probability of observing 30 or more defectives , assuming that the fuse reliability is .98. (Note: you would need to correct for continuity for this problem.)
The sales department at Northface would like to determine the proportion of customers who spend more than $1000 per winter season in their stores.
Using Chi-square table finding the P-value and interpret the result
Fill in the blanks in the table. What percent of students take exactly two courses? What percent of students take one or two courses? What is the relative frequency of ages under 50?
The number of hours per week American adults spend on home computers is normally distributed with a mean of 4 hours and a standard deviation of 1.5 hour. An American adult is randomly selected.
the blood pressure measurements of a single patient were taken by twelve different medical students and the results are
Determine whether the binomial distribution is an appropriate model for the probability distribution of the given experiment.
Make a histogram to display the distribution of the numbers of text messages sent, and describe the distribution.
when solving for the sample size required to estimate p to within a particular margin of error under what circumstances
A research firm conducted a survey to determine the mean amount steady smokers spend on cigarettes during a week. A sample of 64 smokers revealed that = $20 and S = $5. What is the 95% confidence interval for μ?
Cigarettes 2006. In 1999 the Centers for Disease Control and Prevention estimated that about 34.8% of high school students smoked cigarettes.
The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airports.
traditionally the average price of homes sold in a medium size city in canada was 220000. a random sample of 81 homes
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