Answer:
Step-by-step explanation:
What i would do is multiply both sides by 2z + 1
so you get z-6=20z+10
-19z=16
z=-16/19
Her correct change would be $2.75 cents, to get this answer, just subtract 12.42 from 15.17
Hope this helped you!! ( :
Answer:
The probability that the sample proportion will differ from the population proportion by less than 6% is 0.992.
Step-by-step explanation:
According to the Central limit theorem, if from an unknown population large samples of sizes n > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.
The mean of this sampling distribution of sample proportion is:
The standard deviation of this sampling distribution of sample proportion is:

The information provided is:

As the sample size is large, i.e. <em>n</em> = 276 > 30, the Central limit theorem can be used to approximate the sampling distribution of sample proportion.
Compute the value of
as follows:

Thus, the probability that the sample proportion will differ from the population proportion by less than 6% is 0.992.
Answer:
Improper Fraction: 20/3 yards
Mixed number: 6 2/3
Step-by-step explanation:
If 1 dress needed 5/6 yards to complete
then 8 dress needed
8 x 5/6 yards
which is 20/3 yards
I hope this helps