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In: Statistics and Probability

All euros have a national image on the "heads" side and a common design on the...

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 250 times, with its portly king, Albert, displayed on the heads side. The result was 140 heads.

Test the hypothesis that the proportion of times a Belgian Euro coin spins heads equals 50% at alpha = 0.05.

a) The test statistic is z = ________ with P-value . (Use three decimals on both.)

b) The null hypothesis is:

not rejected

rejected

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Expert Solution

orchestra answered 2 years ago
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