Answer:
What are the response choices? ;-;
Step-by-step explanation:
Answer: 770 voters in his district.
Step-by-step explanation:
- Population is the largest group of individuals carrying some specific similar characteristics.
- A sample is a subset of population that is used to represents the entire population.
Given : A state representative wants to know how voters in his district feel about enacting a statewide smoking ban in all enclosed public places, including bars and restaurants, as well as several other current statewide issues.
So the population here is : Voters in His districts .
He mails a questionnaire addressing these issues to an SRS (simple random sample) of 770 voters in his district. Of the 770 questionnaires mailed, 147 were returned.
Thus , the sample is : <u>770 voters in his district</u>.
Basically 770 voters is a subset of the entire population voters in his district.
Answer:
4
Step-by-step explanation:
2^4 - (2^3 +2^2)
Exponents
16 - (8+4)
Parentheses
16 - (12)
Subtract
4
Answer:
Step-by-step explanation:
(a) Number of necklaces
3⁵/₈ = 3.625
(b) Value of gold in each necklace
There are 3.625 oz of 14K gold in each necklace. Pure gold is 24K.
Pure 24K gold is worth $1050/oz.
Step-by-step explanation:
Assuming the data is as shown, restaurant X has a mean service time of 180.56, with a standard deviation of 62.6.
The standard error is SE = s/√n = 62.6/√50 = 8.85.
At 95% confidence, the critical value is z = 1.960.
Therefore, the confidence interval is:
180.56 ± 1.960 × 8.85
180.56 ± 17.35
(163, 198)
Restaurant Y has a mean service time of 152.96, with a standard deviation of 49.2.
The standard error is SE = s/√n = 49.2/√50 = 6.96.
At 95% confidence, the critical value is z = 1.960.
Therefore, the confidence interval is:
152.96 ± 1.960 × 6.96
152.96 ± 13.64
(139, 167)
