N 7 the critical value for an 84 confidence interval

This preview shows page 18 - 22 out of 32 pages.

n 7The critical value for an 84% confidence interval for the proportion is ________.± 2.65± 1.96± 1.41± 1.00
View Feedbackn 8"Gamers" are described as people who regularly play video games. A random sample of 120 people was selected and 66 were found to be male. The 90% confidence interval for the proportion based on this sample is ________.
View Feedbackn 9
The National Center for Education would like to estimate the average student debt for the class of 2010 for the state of Ohio with a 90% confidence interval and a margin of error within plus or minus $1,500. Assuming the standard deviation for student debt in this state is $9,000, the required sample size is ________.
View Feedbackn 10The federal government would like to estimate the proportion of families with no savings. A pilot sample of50 families found that 12 had no savings. The total sample size needed to construct a 98% confidence interval for the proportion of families with no savings with a margin of error equal to 5% is ________.395459423302Quiz Submissions - Chapter 9 QuizLinda Thibault (username: lthiba1)Attempt 1Written: Jun 6, 2017 8:19 PM - Jun 6, 2017 8:47 PMSubmission View
Released: Jun 7, 2017 12:30 PM9 BSD 1esn 1When alpha is greater than p-value, the conclusion for the hypothesis test is to reject the null hypothesis.
View Feedbackn 2
View Feedbackn 4YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 6 minutes. A random sample of 40 people watched online videos that averaged 6.6 minutes in length. It is believed that the population standard deviation for the length of online videos is 1.8 minutes. YouTube would like to set α= 0.10The test statistic for this hypothesis test would be ________.zxx= 2.11z xx= 2.23t xx= 2.06t xx= 1.89View Feedbackn 5YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 6 minutes. A random sample of 40 people watched online videos that averaged 6.6 minutes in length. It is believed that the population standard deviation for the length of online videos is 1.8 minutes.

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture