4. a bank wishes to estimate the mean balances owed by customers holding mastercard. the population
standard deviation is estimated to be $500. if a 98 percent confidence interval is used and an interval of $80 is
desired, how many cardholders should be sampled?
a. 44
b. 87
c. 629 d. 213

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

the correct answer is d

hope this

it would open into a square depending on the type of envelope i’m not sure about the second part