Use for problems 9-15: Tonya wants to estimate what proportion of her school’s seniors plan to attend the prom. She interviews an SRS of 50 of the 750 seniors in her school and finds that 36 plan to go to the prom. _____ 9. Are all three conditions met? (a) No, the random condition is violated (b) No, the normal condition is violated (c) No, the independence condition is violated (d) Yes, all three conditions are met 10. Calculate the point estimate 11. Calculate z* for a 90% confidence interval. 12. Calculate the standard error 13. Calculate the margin of error 14. Calculate the 90% confidence interval. Enter the answer in interval notation with two decimal places. 15. Interpret the confidence interval: We are ______% confident that the interval from ___________ to ____________ capture the actual proportion of ________________________________________________________________________________.
Use for problems 9-15: Tonya wants to estimate what proportion of her school’s seniors plan to attend
the prom. She interviews an SRS of 50 of the 750 seniors in her school and finds that 36 plan to go to
the prom.
_____ 9. Are all three conditions met?
(a) No, the random condition is violated
(b) No, the normal condition is violated
(c) No, the independence condition is violated
(d) Yes, all three conditions are met
10. Calculate the point estimate
11. Calculate z* for a 90% confidence interval.
12. Calculate the standard error
13. Calculate the margin of error
14. Calculate the 90% confidence interval. Enter the answer in interval notation with two decimal places.
15. Interpret the confidence interval:
We are ______% confident that the interval from ___________ to ____________ capture the actual proportion
of ________________________________________________________________________________.
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