Answer:
b) The data is bell shaped hence the assumption of X been normally distributed is correct
c) The categories are
< 5, 5-6, 6-7, 7-8, 8-9, 9-10
d) attached below
e) The probability of < 7 gallons = 0.167
Step-by-step explanation:
<u>a) stem and leaf diagram for these data </u>
stem leaf
5 .3
6 .1, .2, .2, .2, .5, .7, .7, .8
7 .1, .1, .1, .3, .4, .4, .4, .6, .6, .6, .7, .7, .8, .9, .9, .9
8 .0, .1, .1, .2, .2, .2, .4, .5, .7, .7, .7, .8, .8
9 .0, .1, .2, .3, .5, .5, .6, .6, .7
10 0
b) The data is bell shaped hence the assumption of X been normally distributed is correct
c) The categories are
< 5, 5-6, 6-7, 7-8, 8-9, 9-10
d) attached below
e) The probability of < 7 gallons = 0.167
