i) Calculate an approximate 98% confidence interval with a conclusion for the true proportion of students that have problems with their health with continuous online classes.

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A recent study investigated the effects of continuous online classes on students' health during Covid-19. Investigators observed a representative sample of students from
a few universities and found that 592 out of 1200 students have problems with their health with continuous online classes.
i) Calculate an approximate 98% confidence interval with a conclusion for the true proportion of students that have problems with their health with continuous online
classes.
Answer:
p= (a)
Zcritical value= (b)
Standard Error (c)
(SE) =
98% C.I = (d)
(a)
(3 d.p)
(b)
(c)
(3 d.p)
(d)
◆
ii) Estimate the new size of a random sample required for an approximate 95% confidence interval for the proportion calculated in (i) that has a margin of error of 0.04.
Answer:
n=
(integer)
Transcribed Image Text:A recent study investigated the effects of continuous online classes on students' health during Covid-19. Investigators observed a representative sample of students from a few universities and found that 592 out of 1200 students have problems with their health with continuous online classes. i) Calculate an approximate 98% confidence interval with a conclusion for the true proportion of students that have problems with their health with continuous online classes. Answer: p= (a) Zcritical value= (b) Standard Error (c) (SE) = 98% C.I = (d) (a) (3 d.p) (b) (c) (3 d.p) (d) ◆ ii) Estimate the new size of a random sample required for an approximate 95% confidence interval for the proportion calculated in (i) that has a margin of error of 0.04. Answer: n= (integer)
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