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Use the normal approximation to the binomial distribution to determine (to four decimals) the probability of getting 7 heads and 7 tails in 14 flips of a balanced coin. Also refer to the binomial probabilities table of "Statistical Tables" to find the error of this approximation.
each of 12 ordered boxes contains 12 coins consisting of pennies and dimes. the number of dimes in each box is equal to
1. the mean of a normal distribution is 408 pounds. the standard deviation is 13 pounds. what is the area between 424
Suppose you are a budding entrepreneur. The start-up costs, in thousands of dollars, for Entrepreneur Magazine's 25 most popular franchises are summarised below.
What sample size would be needed to estimate he population mean to within one-half standard deviation with 95% confidence?
in a survey of 1954 cellphone owners adults aged 18 and over 743 reported that they use their phone to keep themselves
A local drugstore owner knows that, on average, 20 people enter his store eachhour, assume that the number of people that come into the store follows a Poissonprocess. Find the probability that at least 10 people will come to the store in 30 minute..
Production facilities must keep track of injuries on the job by their employees, known as recordables (injuries severe enough that they must be reported to the appropriate government agency).
in a learning experiment untrained mice are placed in a maze and the time required for each mouse to exit the maze is
What is the 95% confidence interval estimate for the difference between the mean reflectivity reading for Paint A and Paint B? Please complete the blank: "we can be 95% confident that the true difference between the actual means is?
The average range found over these samples is 0.15 gallons. What is the upper control limit for the averages in this process?
in a given population of two-earner malefemale couples male earnings have a mean of 40000 per year and a standard
Find a 95% confidence interval for the percentage of girls and women in Taiwan who had antibodies at that time.
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