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).
To simplify the equation, you just have to add like terms. This means adding 9.63 and 7.5. Once you've found your sum, which is 17.13, your equation will be <em>N+17.13.</em>
Answer:
3
Step-by-step explanation:
3/4
1/4 = 1 pizza
1/4 + 1/4 + 1/4 = 3/4
Answer:
D.5572
Step-by-step explanation:
Shown in picture
Answer:
C. 4(a + b + 2)
Step-by-step explanation:
2(2a + b) 8 equals 4a + 2b + 8. 4(a + b + 2) equals 4a + 4b + 8