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According to the research , 49% of homes sold in a certain month and year were purchased by first -time buyers . A random sample of 150 people who just purchased homes is selected .
Complete parts a through @ below .&quot;
b . What is the probability that less than 78 of them are first-time buyers ?&quot;
P ( Less than 78 of them are first - time buyers ) = \\
( Round to four decimal places as needed . )
C . What is the probability that more than 81 of them are first -time buyers ?&quot;
P ( More than 81 of them are first -time buyers ) = \\
( Round to four decimal places as needed . )
d . What is the probability that more than 73 of them are first -time buyers ?&quot;
P ( More than 73 of them are first - time buyers ) = \\
( Round to four decimal places as needed . )
e . What is the probability that between 64 and 70 of them are first -time buyers ?&quot;
P ( Between 64 and 70 of them are first - time buyers ) = \\

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