Answer:
Step-by-step explanation:
1.
"D. For a random sample of 50 customer wait times, the probability that the sample mean customer wait time will be greater than 25 minutes is approximately 0.10" is correct.
2.
"B. The mean of the sampling distribution of the sample mean is 150 hot dogs" is correct.
(since the mean of all sample means is equal to the population mean which is 150, here).
3.
"B. 2.7−4.2=−1.5" is correct.
(Option D. is incorrect because we want μ(x¯1−x¯2) but not μ(x¯2−x¯1); Option A. is incorrect because 3 and 7 are sample sizes and we are not interested in the difference between sample sizes. Option C. is incorrect because there are no such values as 2.73 and 4.27, here).
4.
"C. No, the conditions for normality have not been met because the sample size for the pennies is not large enough and no information is given about the distributions of the populations" is correct.
(since 25 pennies < 30 is considered small sample and 35 quarters > 30 is considered large sample).
Answer:
7/2 or 3.5
step:
make x the subject which is 2x=y-2.then,simplify the 2x into 1x since the question want the value of 1 x which is x=y-2/2.next,change the y into 9(x=9-2/2) and the answer is 7/2 or you can simplify it which makes the ans 3.5
<u>Compound inequality:</u>
A compound inequality contains two or more inequalities that are separated either by "and" or "or".
And: It indicates that both statements of the compound sentence satisfies at the same time.
Or: This indicates that as long as either statement is true, the entire compound sentence is true.
For example:
1.
Here, and denotes that intersection or the overlap will be the desired result.
2.
Since the joining conjunction is or we can come to a point that the entire compound sentence is true.
AND CASES:
A number is a solution to the compound inequality if the number is a solution to both inequalities. It can either be written as x > -1 and x < 1 or as -1 < x < 1.
OR CASES:
A number is a solution to the compound inequality if the number is a solution to at least one of the inequalities. It is written as x < -1 or x > 1.
Answer:
n = 8.2
Step-by-step explanation:
54 - 13 = 41
5n = 41
41/5 = 8.2
n=8.2
Substitute the x for 16 and put it in your calculator, so, 1/3(4-16)^2