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In a human factor experimental project, it has been determined that the reaction time of a pilot to a visual stimulus is normally distributed with a mean of 0.25 seconds and standard deviation of 2/5 seconds. What is the reaction time that is exceeded 70% of the time?
Which distribution should be used to create 80% confidence interval?
Calculate the mean and the standard error of the sampling distribution of the sample means. Also, find the mean and standard error of the sampling distribution for samples of size 5.
a multiple choice test consists of 60 questions. each question has 4 possible answers of which one is correct. if all
You just saw an ad on television that states the majority of the population would vote to make smoking illegal. The poll that is referenced shows 53% of those asked supported making smoking illegal.
Which measure of central tendency would you use to summarize the data below? Which inferential test would you use to determine if there is a difference in rainfall between the sample 2 and 3?
john carpenter runs a timber company. john is considering an expansion to his product line by manufacturing a new
the average life of a certain type of small motor is 10 years with a standard deviation of 2 years. the manufacturer
For these data, a 99% confidence interval for true mean weight loss by all patients attending the clinic would have the limits (?, ?).
q1. calculate each of the following values for the data set below assume it is a population.3.42 4.10 4.15 4.19 4.26
a quality control test has five equally likely outcomes - a b c d and e.a what is the probability of c occurring?b what
A vending machine dispenses coffee into a twelve ounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.08 ounce.
The upper limit of a 95% confidence interval for the population mean would equal:
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