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The management of is considering a new method of assembling its golf carts. The present method requires 44.6 minutes on average to assemble a golf cart. The mean assembly time for a random sample of 24 carts was 40.6 minutes, and the standard deviation of the sample was 2.7 minutes. What is the value of the test statistic?
what are the two critical values for a two-tailed test with a 0.01 level of significance when n is large and the
question an open label study where participant are aware of the treatment they are taking is conducted to assess the
according to the census bureau 3.21 people reside in the typical american household. a sample of 25 households in
Write up your results by using scientifically recognized form.
question the selling prices in thousands of dollars for a sample of 15 recreational vehicles sold by getaway rvs and
Perform an appropriate hypothesis test, showing the necessary calculations and/or explaining the process used to obtain the results.
If life of wild pheasants follows a normal distribution with a mean of 9 months and a variance of 9, what percent of the population will be less than 11 months of age.
Effectiveness White flies are devastating California crops. An area infested with white flies is to be sprayed with a chemical which is known to be 98% effective for each application.
find the sample size needed to estimate the percentage of adults who have consulted fortune tellers. use a 0.03 margin
A new improved rocket launching system is being considered for short-range assault rockets. The requirement is that 80% of the rockets shall strike the target area at 800 meters. A sample of 36 experimental launches is made with 29 striking the ta..
Eighty-eight shoppers were interviewed at random, and 59 said that they prefer to shop alone. What is the value of q-hat?
The Gallup Poll asked a sample of 178 U.S. adults, "Did you, yourself, happen to attend church or synagogue in the last 7 days? Use "Plus Four" method to have a more accurate 95% confidence interval.
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