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A certain diagnostic test is indicative of problems only if a child scores in the lowest 10% of all those taking the test. If the mean score is 150 with a standard deviation of 30, what would the diagnostically meaningful cutoff be?
Assume 1.5% of antennas on new Nokia cell phones are imperfect. For random sample of 200 antennas, determine the probability that: None of the antennas is defective.
What can you conclude from Chebyshev's theorem about the percentage of adults in the town whose heights are between 57.3 and 77.7 inches? Please show work.
clarkson university surveyed alumni to learn more about what they think of clarkson. one part of the survey asked
Scores of an aptitude test are normally distributed with a mean of 280 and a standard deviation of 30. Determine the percentage of samples of size 4 that have a mean score within 21 points of the population mean score of 280.
create a game of chance using a coin dice or a standard deck of cards. choose how to play the game and determine at
the driving distance for the top 100 golfers on the pga touris between 284.7 and 310.6 yards. assume that the driving
peter the head of a survey organization is planning to do a survey to estimate the percentage of people who intend to
If the sides of the square are lengthened by 5cm, the area becomes 144cm^2. Find the length of a side of the original square.
a packet of sunflower seeds states that each seed will germinate with probability 0.7. a gardener randomly selects 6
for several years the mean number of customers per day at a restaurant has been 142. recently the number of customers
Be sure to show whether you use the t- or z- value, and what value you use. Interpret the confidence interval in a single sentence. In another sentence, state why you used either the "t" or the "z".
Find a 99% confidence interval for the true mean heart rate of all people with this untreated condition. Show your calculations.
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