健宇 asked in 社會與文化語言 · 1 decade ago

有關生物統計軟體我不會的題目...希望有人幫我解出

1.A new television series must prove that it has more than 25% of the

viewing audience after its initial 113-week run if it is to be judged

successful. Assume that in a sample of 400 households, 112 were

watching the new series.

(a) At a 0.1 level of significance, can the series be judged successful on

the basis of the sample information.( 0 : 0.25 v.s : 0.25 a H p≤ H p> )

(b) Test the above hypothesis based on the p-value.

1 Answer

Rating
  • 1 decade ago
    Favorite Answer

    H0:P=0.25H1:P>0.25Z=( 112 / 400 - 0.25 ) / √[ ( 112 / 400 ) * ( 288 / 400 ) / 400 ] = 1.3363∵Z>Z0.1=1.282∴reject H0∴A new television series has more than 25% of the viewing audience0.05 < P_value < 0.1

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