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in a random sampleof 2000 families in a city, it was found that 700 have a...

in a random sampleof 2000 families in a city, it was found that 700 have a palsma tv set test the hypothesis that propotion of all families having a palsma tv set is greater than 0.3 using the p value apporach at a1% level of significance

Math   Statistics-And-Probability   
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Answer #1

Null Hypothesis:

It means a proportion of all families having a plasma tv set is 0.3

Alternate Hypothesis:

It means a proportion of all families having a plasma tv set is greater than 0.3

Significance level

Sample size n = 2000

Sample proportion  

Test statistics:

P-value = 0

we can find it using excel function: =1- NORM.S.DIST(4.88,TRUE) = 0

Since the P-value < result is significant which means we reject the null Hypothesis.

Conclusion: There is enough evidence to conclude that the propotion of all families having a palsma tv set is greater than 0.3

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