<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,





Mean = (19 +27 +25+21+44+22+45+34)/8 = 29.625≈30 years
Answer is 30.
Answer:
b
Step-by-step explanation:
the answer is - 11/12
Answer:
It is in the ones place and the value is 4
Step-by-step explanation:
3√x+2 = √x+4
divide both sides by 3
√x+2 = √x+4 / 3
remove radical by squaring both sides
x+2 = x+4/9
x+2 = x/9 + 4/9 =
8x/9 = -14/9
8x*9 = -14*9=
72x = -126
x = -7/4