Answer:
(a) (0.9240, 0.956)
(b) (0.6383, 0.7017)
Step-by-step explanation:
The number of internet users involved in the survey, n = 846
The percentage of the respondents that said the internet has been good thing for them personally, 
= 94%
(a) The confidence interval of a percentage is given as follows;
The z-value for 95% confidence interval = 1.96
We get;
CI = 0.9240 ≤ ≤ 0.956 = (0.9240, 0.956)
(b) The percentage of the internet users that said the internet has directly strengthened their relationship with their families, = 67% = 0.67
The 95% confidence interval is therefore;
From which we have;
CI = 0.6383 ≤ ≤ 0.7017 = (0.6383, 0.7017)
10 Celsius
Explanation: SIRI said
Answer:
3/5 - 1/2 is 1/10 while 3/5 -3/10 is 3/10
Step-by-step explanation:
Let x equal the # of child tickets
Let y equal the # of adult tickets
x + y = 84
3x + 5y = 360
Solve and state the answer. Use the substitution method to solve this system. Solve the first equation for x.
x + y = 84
x = 84 - y
Now substitute the resulting expression into the other equation and solve for y.
3( 84 - y ) + 5y = 360
252 - 3y + 5y = 360
Combine like terms
252 + 2y = 360
Subtract 252 from both sides
2y = 108
Divide by 2 on both sides
y = 54
Substitute the value of y into the equation that we solved for x, x = 84 - y
x = 84 - 54
x = 30
Therefore the answer should be, 30 childrens tickets sold and 54 adult tickets sold.
