Tales of Berseria Anim 4 x KCWeBWork Spr 17marga) x Y Take Home Exam 5.pdf Secur

Question

Tales of Berseria Anim 4 x KCWeBWork Spr 17marga) x Y Take Home Exam 5.pdf Secure h ps://ttu.blackboard.com bbcswebdav/pid-2545691 dt-conten rid-13206330 1 /courses MATH-2345-DO1/Take%20Home%20Exam%205.pdf li q6-q10). Consider the following hypothesis test Ho p 0.25 Ha p 0.25 A sample of 500 provided a sample proportion p 0.2. The level of significance is 0.01 6. This hypothesis test is a: A) Lower tail test for the population proportion B) Upper tail test for the population proportion C) Two tailed test for the population proportion. D) Two tailed test for the population mean. 7. The value of the test statistic is: B) 2.59 C) 93 D) 0.25 A) 2.59 8. The p-value is: B) 0.0048 C) 0.02 D) 1.93 A) 0.0096 9) Which is the value for a/2: A) 1.96 B) 1.64 C) 1.28 D) 2.57 10. Your conclusion for the above hypothesis test is: B) p 0.25 A) p 0.25 Useful formulas Test statistic for the population mean: z Test statistic for the population proportion: Ask me anything 3:09 AM 3/10/2017

Explanation / Answer

(6)
This hypothesis test is a two tailed test for the population proportion (option D)

(7)
value of test statistics

z = (0.2 - 0.25)/sqrt(0.25*0.75/500) = -2.59 (Option B)

(8)
The P-Value is 0.009598
(Option A)

(9)
Z(alpha/2) = 2.57

(10)
As p-value is less than significance level (0.01), we reject the null hypothesis.
Hence Option B

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