Answer:
<u>Width= 120</u>
<u />
Step-by-step explanation:
We know that <u>L*W= A</u>
So lets put in the variables we know into the equation.
<u>L= 132 yards</u>
<u>A= 15840</u>
132 * W= 15840
All we need to do is <u>divide 15840 by 132</u>
<u>15840/132= 120</u>
<u>W=120</u>
We need to divide
So, we can divide each terms of the numerator by 3p. So,
=
\frac{2}{3p} [/tex] cannot be further simplify. So, the final answer is:
Answer:
Option A
Step-by-step explanation:
A type I error is committed when a researcher rejects the null hypothesis when it is actually true.
The null hypothesis is: U <= 50%
The alternative is: U > 50%
Thus, the principal could have committed an error by rejecting null hypothesis and concluding that more than 50% of students want earlier lunch, when in actuality 50% or less want earlier lunch.
Answer:
C is the answer they are equal.
Step-by-step explanation:
Answer:
Step-by-step explanation:
a) Sample statistics are used to estimate population value. Since 48% is a sample proportion, therefore, it is a sample statistic.
b) For 95% confidence level, z* = 1.96.
\hat{p}\pm z^* \sqrt{\frac{\hat{p}(1-\hat{p})}{n}}= 0.61\pm 0.61\sqrt{\frac{0.61(1-0.61)}{1578}}=0.61\pm 0.024 \ or (0.586, 0.634).
We are 95% confident that the true proportion of US residents who think marijuana should be made legal lies between 58.6% and 63.4%.
c)
\\np=1578(0.61)=962.58
\\n(1-p)=1578(1-0.61)=615.42
Since both np and n(1-p), are at least 10, the normal model is a good approximation for these data.
d) As the lower limit of confidence interval is less than 0.5, less than 50% population is also a plausible value of true proportion. This means the statement "Majority of Americans think marijuana should be legalized" is not justified.
