Answer:
b. the sample standard deviation is used to estimate the population standard deviation.
Correct since that's the best approximation in order to use the t distribution to estimate the mean
Step-by-step explanation:
For this problem let's analyze the possible options:
a. the population has a mean of less than 30.
False since the mean can be any value and not makes sense
b. the sample standard deviation is used to estimate the population standard deviation.
Correct since that's the best approximation in order to use the t distribution to estimate the mean
c. the variance of the population is known.
False if the variance is know we can use the z distribution for the confidence interval and is not neccessary the t distribution
d. the mean of the population is unknown.
False we create the confidence interval since we don't know the true mean beacuse if we know the mean we don't need to create an interval
-42-63i
Negative 42 minus 63i
Answer:
x = 3
Step-by-step explanation:
Check:
It checks.
Answer:
(Choice A)
Juanita gets a strike next game.'
Step-by-step explanation:
Your question is obviously incomplete.
Complete question is:
Juanita and Nina are bowling together. The probability of Juanita getting a strike next game is 24%. The probability of Nina getting a strike next game is 0.17. Which of these events is more likely?
(Choice A)
Juanita gets a strike next game.'
(Choice B)
Nina gets a strike next game.
(Choice C)
Neither. Both events are equally likely.
Answer:
Probability of Juanita : P(J)= 24% => 0.24
probability of Nina getting a strike next game: P(N) = 0.17
As you can see 0.24 > 0.17 ----> P(J)>P(N)
Thus it can be concluded that Juanita gets a strike next game is more likely.
so, choice A
The question is asking you to come up with a real-life example of something that can be represented as 15+ c= 17.50. If I were you I would do sales tax. You bought an item with a 15 dollar price tag, but when you go to check out 2.50 are added in tax to equal 17.50. to solve subtract 15 from 17.50: c= 2.50. Your variable (c) represents the sales tax. Hope that helps! :)