(22.09) All euros have a national image on the \"heads\" side and a common desig
ID: 3315716 • Letter: #
Question
(22.09) All euros have a national image on the "heads" side and a common design on the "tails" side. Spinning a coin, unlike tossing it, may not give heads and tails with equal probabilities. Polish students spun the Belgian euro 257 times, with its portly king, Albert, displayed on the heads side. The result was 128 heads.
Test the hypothesis that the proportion of times a Belgian Euro coin spins heads equals 50% at alpha = 0.04 .
The test statistic is z = with P-value . (Use three decimals on both.)
The null hypothesis is:
Explanation / Answer
The statistical software output for this problem is:
One sample proportion summary hypothesis test:
p : Proportion of successes
H0 : p = 0.5
HA : p 0.5
Hypothesis test results:
z = -0.062
P - value = 0.950
The null hypothesis is not rejected.
Proportion Count Total Sample Prop. Std. Err. Z-Stat P-value p 128 257 0.49805447 0.031189143 -0.062378286 0.9503Related Questions
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