Question

the amount a mother spends on prenatal care can have a long term impact in terms of reducing complications resulting from a baby's low birth weight. a random sample of 50 new mothers was asked to estimate how much they spent on prenatal care. the rerults are presented in the frequency distribution below.

amount spent on prenatal care     mothers no
0-99                                                                 2
100-199                                                          4
200-299                                                          8
300-399                                                          20
400-499                                                          16

Total                                                                50
a. calculate the mean amount spent on prenatal care

b. us1e the short-cut formula to calculate the standard deviation of amounts spent on prenatal care.
c. construct a relative frequency polygon of amounts spent on prenatal care.
d. construct a percentage ogive of amount spent on prenatal care.
e. does the frequency polygon suggest skewness in the data? if so which direction?
f. what percentage of mothers spent less than $200 on prenatal care?

Answer 1