Answer:
No, It is a Cluster Sampling.
Step-by-step explanation:
Simple Random Sampling is the sampling when samples are chosen randomly, where each unit has an equal chance of being selected in a sample.
If the population is divided into a different group called cluster and clusters are selected as a sample then it is Cluster Sampling.
Here, since Expert is interviewing all of the teachers at the selected schools, so it is Cluster Sampling, not a Simple Random Sampling.
Answer:
The 95% confidence interval to determine the true proportion of all patrons who would be interested in attending the showing is (0.2121, 0.4671).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence level of
, we have the following confidence interval of proportions.

In which
z is the z-score that has a p-value of
.
Of the 53 patrons, 18 said that they would come to see the film.
This means that 
95% confidence level
So
, z is the value of Z that has a p-value of
, so
.
The lower limit of this interval is:

The upper limit of this interval is:

The 95% confidence interval to determine the true proportion of all patrons who would be interested in attending the showing is (0.2121, 0.4671).
C. is the answer.
The modulus or absolute value function of a real number x is the non-negative value of x without regard to its sign.
The only correct option is C. because 15 is indeed greater than 12.
Options A., B., D. and E. are wrong.
Neither only 7×2=14 4,6 is not = to 14 neither
2,5
Answer:
<u>39.5 miles/gallon.</u>
Step-by-step explanation:
6 gallons of gas used to drive 237 miles
The rate of her car uses gas in miles per gallon =

Which mean the car will consume 1 gallon for each 39.5 miles.