Question

Suppose 51% of the population has a retirement account. If a random sample of size 530 is selected, what is the probability that the proportion of persons with a retirement account will differ from the population proportion by less than 6%? Round your answer to four decimal places.

Answer #1

TOPIC:Sampling distribution of the sample proportion and the required probability.

Suppose 42% of the population has a retirement account.
If a random sample of size 711 is selected, what is the
probability that the proportion of persons with a retirement
account will differ from the population proportion by less than 4%?
Round your answer to four decimal places.

Suppose 47% of the population has a retirement account.
If a random sample of size 847 is selected, what is the
probability that the proportion of persons with a retirement
account will be greater than 52%? Round your answer to four decimal
places.

Suppose 55% of the population has a college degree.
If a random sample of size 496 is selected, what is the
probability that the proportion of persons with a college degree
will differ from the population proportion by less than 4%? Round
your answer to four decimal places.

Suppose 52% of the population has a college degree. If a random
sample of size 563 is selected, what is the probability that the
proportion of persons with a college degree will differ from the
population proportion by more than 5%? Round your answer to four
decimal places.

Suppose 55% of the population has a college degree. If a random
sample of size 496 is selected, what is the probability that the
proportion of persons with a college degree will differ from the
population proportion by greater than 4%? Round your answer to four
decimal places.

Suppose 55% of the doctors in America are dentists. If a random
sample of size 405 is selected, what is the probability that the
proportion of doctors who are dentists will differ from the
population proportion by less than 6%? Round your answer to four
decimal places.

1. Suppose a large shipment of telephones contained 7%
defectives. If a sample of size 247 is selected, what is the
probability that the sample proportion will be greater than 9%?
Round your answer to four decimal places
2. Suppose 48% of the population has myopia. If a random sample
of size 484 is selected, what is the probability that the
proportion of persons with myopia will differ from the population
proportion by less than 3%? Round your answer to...

Suppose 52% of politicians are lawyers. If a random sample of
size 411 is selected, what is the probability that the proportion
of politicians who are lawyers will differ from the total
politicians proportion by less than 5%? Round your answer to four
decimal places.

Suppose 50% of politicians are lawyers.
If a random sample of size 780 is selected, what is the
probability that the proportion of politicians who are lawyers will
differ from the total politicians proportion by less than 4%? Round
your answer to four decimal places.

Suppose 50% of politicians are lawyers.
If a random sample of size 518 is selected, what is the
probability that the proportion of politicians who are lawyers will
differ from the total politicians proportion by greater than 6%?
Round your answer to four decimal places.

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