Question

A carpet expert believes that 5% of Persian carpets are counterfeits. If the expert is right, what is the probability that the proportion of counterfeits in a sample of 460 Persian carpets would be less than 6%? Round your answer to four decimal places.

Answer #1

A hotel manager believes that 17% of the hotel rooms are
booked.
If the manager is right, what is the probability that the
proportion of rooms booked in a sample of 465 rooms would be less
than 14%? Round your answer to four decimal places.

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 630 pet dogs would be
greater than 7%? Round your answer to four decimal places.

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 503 pet dogs would be
greater than 11%? Round your answer to four decimal places.

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.

A researcher believes that 9% of males smoke cigarettes.
If the researcher is correct, what is the probability that the
proportion of smokers in a sample of 664 males would differ from
the population proportion by less than 3%? Round your answer to
four decimal places

The number of weaving errors in a twenty-foot by ten-foot roll
of carpet has a mean of 0.8. What is the probability of observing
less than 2 errors in the carpet? Round your answer to four decimal
places.

A researcher believes that 8% of males smoke cigarettes.
If the researcher is correct, what is the probability that the
proportion of smokers in a sample of 512 males would differ from
the population proportion by greater than 3%? Round your answer to
four decimal places.

A statistician
calculates that 8%8% of Americans own a Rolls Royce.
If the statistician is
right, what is the probability that the proportion of Rolls Royce
owners in a sample of 595595 Americans would differ from the
population proportion by less than 3%3%? Round your answer to four
decimal places.

A quality control expert at LIFE batteries wants to test their
new batteries. The design engineer claims they have a standard
deviation of 87 minutes with a mean life of 538 minutes. If the
claim is true, in a sample of 134 batteries, what is the
probability that the mean battery life would be less than 547.9
minutes? 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 be less than 106.35 months?
Round your answer to four decimal places

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 8 minutes ago

asked 9 minutes ago

asked 16 minutes ago

asked 20 minutes ago

asked 20 minutes ago

asked 30 minutes ago

asked 31 minutes ago

asked 37 minutes ago

asked 44 minutes ago

asked 47 minutes ago

asked 47 minutes ago

asked 50 minutes ago