A sample of the amounts paid for parking at the Azikov parking garage last weekend is depicted below, use the information to answer the questions that follow.
Amount 0.30 0.60 0.90 1.20 and 1.50 1.80 and 2.10 2.40
paid and and and under1.50 and under2.10 and and
2.
under under under
under
under
under
0.60 0.90 1.20
1.80
2.40 2.70
Frequency 2 7
15 28
14
9
2
NB: Use two decimal places
1 Estimate the mean amount paid
i Calculate the sample standard deviation and interpret
Calculate the sample coefficient of variation for the distribution

x= 149. 24+7=31. 180-31=149

your welcome

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.