Question

The Office of the Registrar at NUST wants to determine the proportion of students who visit their library facility on a regular basis. the Chief Librarian of the library facility claimed that more than 20% of all students visit their library on a regular basis, thus, in recent survey covering a random sample of 256 students indicated that 48 of them visited the facility on a regular basis. 1. Estimate and interpret the 90% and 95% confidence interval estimates for the true unknown population proportion of students that visit the library facility on a regular basis 2. comment on the difference between the two interval estimates obtained in question 1.3.1

Answer #1

A college registrar wants to estimate the proportion of all
students at the college who are dissatisfied with the online
registration procedure. What is the most conservative estimate of
the minimum sample size that would limit the margin of error to be
within 0.045 of the population proportion for a 95% confidence
interval?

1/ A physical therapist wants to determine the difference in the
proportion of men and women who participate in regular sustained
physical activity. What sample size should be obtained if she
wishes the estimate to be within five percentage points with 95%
confidence, assuming that
(a)she uses the estimates of 21.8% male and
18.3% female from a previous year? n = (Round up to the nearest
whole number.)
(b) she does not use any prior estimates?
2/ A survey asked,...

Delta airlines case study
Global strategy. Describe the current global
strategy and provide evidence about how the firms resources
incompetencies support the given pressures regarding costs and
local responsiveness. Describe entry modes have they usually used,
and whether they are appropriate for the given strategy. Any key
issues in their global strategy?
casestudy:
Atlanta, June 17, 2014. Sea of Delta employees and their
families swarmed between food trucks, amusement park booths, and
entertainment venues that were scattered throughout what would...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 2 minutes ago

asked 10 minutes ago

asked 19 minutes ago

asked 53 minutes ago

asked 55 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago