Mathematics, 15.05.2020 00:57 GemJock
A national survey of companies included a question that asked whether the company had at least one bilingual telephone operator. The sample results of 90 companies follow (Y denotes that the company does have at least one bilingual operator; N denotes that it does not).
N N N N Y N Y N NY N N N Y Y N N NN N Y N Y N Y N YY Y N Y N N N Y NN Y N N N N N N NY N Y Y N N Y N YN N Y Y N N N N NY N N N N Y N N NY Y Y N N Y N N NN N N Y Y N N Y N
Use this information to estimate with 95% confidence the proportion of the population that does have at least one bilingual operator.
Answers: 3
Mathematics, 21.06.2019 16:10
The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82
Answers: 2
Mathematics, 21.06.2019 20:50
An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.
Answers: 3
Mathematics, 21.06.2019 21:30
Mama mia restaurant used 1 2 2 1 ? of their mozzarella cheese making pizza and the remaining 6 4 64 ounces making pasta. how many pounds of mozzarella cheese did mama mia start with?
Answers: 1
Mathematics, 21.06.2019 23:30
The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount
Answers: 1
A national survey of companies included a question that asked whether the company had at least one b...
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