Mathematics, 11.11.2019 18:31 jfox8741
Astudy was conducted in order to estimate ? , the mean number of weekly hours that u. s. adults use computers at home. suppose a random sample of 81 u. s. adults gives a mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard deviation is assumed to be ? = 3.6 hours. based on this information, what would be the point estimate for ) 81(b) 8.5(c) 3.6(d) none of the above. we are 95% confident that the mean number of weekly hours that u. s. adults use computers at home is: (a) between 8.1 and 8.9.(b) between 7.8 and 9.2.(c) between 7.7 and 9.3.(d) between 7.5 and 9.5.(e) between 7.3 and 9.7.which of the following will provide a more informative (i. e., narrower) confidence interval than the one in problem 3? (a) using a sample of size 400 (instead of ) using a sample of size 36 (instead of ) using a different sample of size 81.(d) using a 90% level of confidence (instead of 95%) using a 99% level of confidence (instead of 95%) both (a) and (d) are correct.(g) both (a) and (e) are correct. how large a sample of u. s. adults is needed in order to estimate ? with a 95% confidence interval of length 1.2 hours? (a) 6(b) 12(c) 20(d) 36(e) 144
Answers: 3
Mathematics, 21.06.2019 17:30, Kingoftycoons3271
Your client has saved $1,860 for a down payment on a house. a government loan program requires a down payment equal to 3% of the loan amount. what is the largest loan amount that your client could receive with this program
Answers: 3
Mathematics, 21.06.2019 18:00, abhibhambhani
Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.
Answers: 1
Mathematics, 21.06.2019 18:00, isaiahcannon5709
Use the data on the dot plot to answer the question. how many people read for more than three hours last week? i'm on a unit test review
Answers: 1
Astudy was conducted in order to estimate ? , the mean number of weekly hours that u. s. adults use...
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