question archive According to the? research, 45?% of homes sold in a certain month and year were purchased by? first-time buyers
According to the? research, 45?% of homes sold in a certain month and year were purchased by? first-time buyers
Subject:BusinessPrice: Bought3
According to the? research, 45?% of homes sold in a certain month and year were purchased by? first-time buyers. A random sample of 195 people who just purchased homes is selected.
a)the standard error of the proportion.
σp=0.0356
b) the probability that less than 93 of them are? first-time buyers?
?P(Less than 93 of them are? first-time ?buyers)=0.7764
c) What is the probability that more than 97 of them are? first-time buyers?
?P(More than 97 of them are? first-time ?buyers)= 0.0934
d) What is the probability that more than 85 of them are? first-time buyers?
?P(More than 85 of them are? first-time ?buyers)=?
?(Round to four decimal places as? needed.)
