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In competitive shooting, you can always adjust the sights to remove any bias in your aim. Therefore, the most important aspect of a shooter is to have a low standard deviation in how you aim. Your friends Adam, Betty and Chris all claim that their standard deviations are less than 1cm when shooting from 100 meters away. To test them, you ask them to fire 10 shots each, for which you measured standard deviations of 1.28cm (Adam), 1.09cm (Betty) and 0.7cm (Chris). What can you say about their claims?
Suppose a survey item asks someone if something is very important, somewhat important, not very important, or unimportant. This is an example of what level of measurement?
According to Fortune, Missouri is within 500 miles of 44% of all U.S. manufacturing plants 8. If a Missouri company needs parts manufactured in 122 different plants, what is the probability that at least half of them can be found within 500 miles ..
A leasing firm claims that the mean number of miles driven annually,M , in its leased cars is less than 13020 miles. A random sample of 90 cars leased from this firm had a mean of 12750 annual miles driven.
The accounting department at Weston reports that it takes two construction workers a mean of 32 hours and a standard deviation of 2 hours... Determine the z values for 29 and 34 hrs. What percent of garages take between 32 and 34 hrs to erect.
Find a 90% confidence interval for the mean decibel level µ for this type of transit vehicle.
The professors mentioned, he was determined to find the correct answer and make a correction during a future broadcast. What are the chances of getting 15 days of rain during the next 30 days?
a parcel service randomly selected 48 packages it received. the sample has a mean weight of 18.6 pounds. assume that
a regional director responsible for business development in the state of pennsylvania is concerned about the number of
What is the lowest raw score that a client must have on Anxiety Scale A in order to be admitted into this new group? Also assuming some clinics use Anxiety Scale B and often refer their clients to Mary, what is the cutoff point (lowest raw score) ..
The following payoff matrix has been developed for the decision problem. What is the opportunity loss when "A" is Investment alternative and "Decline" is state of nature?
you are dealt two cards successively without replacement from a standard deck of 52 playing cards. find the
a u chart is to be used to control a corrugated paper product line. end product is produced in rolls of varying
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