celina kuitkowski I ? 1 7/29/18 S31 PM Elementary Statistics SU 18 x2 Homework:

Question

celina kuitkowski I ? 1 7/29/18 S31 PM Elementary Statistics SU 18 x2 Homework: Homework 9 Score: 0 15 of 2 pts 9.2.7-T Save HYV Score: 057%, 0 15 of 27 pts Qustion Help 25, 10 dream in back and whte Use a 6 o1 significance levest to test the claim that the proportion of people over 55 who dream in tack and whide is greater than the proportion for those under 25 Complete parts (a) deniify the test statistic Roundto hwo decmal places as needed) Enter your answer in the answer box and then click Check Answer 5 para ning O Type here to search

Explanation / Answer

The statistical software output for this problem is:

Two sample proportion summary hypothesis test:
p1 : proportion of successes for population 1
p2 : proportion of successes for population 2
p1 - p2 : Difference in proportions
H0 : p1 - p2 = 0
HA : p1 - p2 > 0

Hypothesis test results:

Hence,

Test statistic = 7.20

Difference Count1 Total1 Count2 Total2 Sample Diff. Std. Err. Z-Stat P-value p1 - p2 69 307 10 313 0.19280682 0.026783972 7.1985895 <0.0001

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