An airline's public relations department says that the airline rarely loses passengers' luggage. It further claims...

An airline's public relations department says that the airline rarely loses passengers' luggage. It further claims that on those occasions when luggage is lost, 92 % 92% is recovered and delivered to its owner within 24 hours. A consumer group who surveyed a large number of air travelers found that only 137 of 169 people who lost luggage on that airline were reunited with the missing items by the next day. Does this cast doubt on the airline's claim? Explain

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Ho :   p =    0.92
H1 :   p ╪   0.92

Level of Significance,   α =    0.05
Number of Items of Interest,   x =   137
Sample Size,   n =    169

Sample Proportion ,    p̂ = x/n =    0.810650888

Standard Error ,    SE = √( p(1-p)/n ) =    0.020868708

Z Test Statistic =    Z = ( p̂-p)/SE =    -5.239860288


p-Value   = 0.0000 [ excel formula: =2*normsdist(z)
Conclusion:     p-value>α , do not reject null hypothesis

yes, there is insufficient evidence to reject the claim at 0.05 significnace level

milcah answered 9 months ago

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An​ airline's public relations department says that the airline rarely loses​ passengers' luggage. It further claims...

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An airline's public relations department says that the airline rarely loses passengers' luggage. It further claims...