@=me.,.idea please show work :-0 19) in a randomly selected sample of 500 colleg
ID: 2950328 • Letter: #
Question
@=me.,.idea please show work :-0
19) in a randomly selected sample of 500 college students, 80%do not own laptop computers. the standard error of the sampleproportion is 0.0179. calculate an approximate 95% confidenceinterval for the proportion of all students who do not own a laptopcomputer
a. (.746, .854)
b. (.782, .818)
c. (.764, .836) @
d. none of the above
20) a random sample of 30 airline flights during a storm had amean delay of 40 minutes. the standard deviation was 5 minutes, andthe standard error of the mean is 0.9129. calculate a 90%confidence interval for the average delay for all flights during astorm
a. (38.2, 41.8)
b. (38.4, 41.6)
c. (31.5, 48.5)
d. none of the above
Explanation / Answer
19) in a randomly selected sample of 500 college students, 80%do not own laptop computers. the standard error of the sampleproportion is 0.0179. calculate an approximate 95% confidenceinterval for the proportion of all students who do not own a laptopcomputer
a. (.746, .854)
b. (.782, .818)
c. (.764, .836)@
d. none of the above
20) a random sample of 30 airline flights during a storm had amean delay of 40 minutes. the standard deviation was 5 minutes, andthe standard error of the mean is 0.9129. calculate a 90%confidence interval for the average delay for all flights during astorm
a. (38.2, 41.8)
b. (38.4, 41.6)
c. (31.5, 48.5)
d. none of the above