A researcher believes that 8%
of pet dogs in Europe are Labradors.
If the researcher is right, what is the probability that the proportion of Labradors in a sample of 437
pet dogs would differ from the population proportion by greater than 3%? Round your answer to four decimal places.
P(Sample proportion would differ by more than 0.03)
= 1 - P(Within 0.03)
= 1 - P(-2.31 < z < 2.31)
= 1 - 0.9792
= 0.0208
A researcher believes that 8% of pet dogs in Europe are Labradors. If the researcher is...
A researcher believes that 8% of pet dogs in Europe are Labradors. If the researcher is right, what is the probability that the proportion of Labradors in a sample of 535 pet dogs would differ from the population proportion by less than 3%? Round your answer to four decimal places.
A researcher believes that 7% of pet dogs in Europe are Labradors. If the researcher is right, what is the probability that the proportion of Labradors in a sample of 494 pet dogs would be greater than 9%? Round your answer to four decimal places.
A researcher believes that 2% of pet dogs in Europe are Labradors. If the researcher is right, what is the probability that the proportion of Labradors in a sample of 401 pet dogs would be less than 4%? Round your answer to four decimal places.
A researcher believes that 5% of pet dogs in Europe are Labradors. If the researcher is right, what is the probability that the proportion of Labradors in a sample of 806 pet dogs would be greater than 4%? Round your answer to four decimal places.
A director of reservations believes that 7% of the ticketed passengers are no-shows. If the director is right, what is the probability that the proportion of no-shows in a sample of 540 ticketed passengers would differ from the population proportion by greater than 3%? Round your answer to four decimal places.
A director of reservations believes that 8% of the ticketed passengers are no-shows. If the director is right, what is the probability that the proportion of no-shows in a sample of 730 ticketed passengers would be greater than 9% ? Round your answer to four decimal places.
A film distribution manager calculates that 9%9% of the films released are flops. If the manager is right, what is the probability that the proportion of flops in a sample of 754754 released films would differ from the population proportion by greater than3%3%? Round your answer to four decimal places.
The quality control manager at a computer manufacturing company believes that the mean life of a computer is 105 months, with a variance of 81 If he is correct, what is the probability that the mean of a sample of 70 computers would differ from the population mean by less than 1.9 months? Round your answer to four decimal places.
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