<u>Answer-</u>
A 95% confidence interval for the true percent of movie goers is 36.41% to 44.25%
<u>Solution-</u>
Given,
n = 600 (sample size)
x = 252 (number of people who bought)
Confidence interval = 95%, so z = 1.96
We know that,
where,
M = sample mean
Z = Z statistic determined by confidence level
SE = standard error of mean
Calculating the values,
from the tables
Putting all the values in the formula,
16+14 = 30.
30 is your answer
A]<span>Given that y varies jointly with w and x and inversely with z and y = 175 when w = 5, x = 20 and z = 4.
then
y=kwx/z
where k is the constant or proportionality given by:
k=yz/wx
but
y=175, when w=5, x=20, z=4
hence
k=(175*4)/(5*20)
k=7
Thus the equation is:
y=(7xw)/z
b]</span><span>find y when w = 2, x = 24 and z = 6.
y=(7*2*24)/6
y=336/6
y=56</span>
Answer:
The fraction of the money that Lisa received will be 5x/13
Step-by-step explanation:
The the amount shared by Lisa and ant be x
If Lisa and ant share the money in the ratio 5:8, to get the fraction Lisa received;
Step1:
The total ratio will give:
5+8 = 13
Since the ratio Lisa got was 5, then the fraction of money Lisa receive will be:
Lisa ratio/Total ratio × Amount shared
= 5/13 × x
= 5x/13
Therefore, the fraction of the money that Lisa received will be 5x/13
Answer:
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