Answer:
5. 20 times 6. 17 times
Step-by-step explanation:
Since there are 30 outcomes, you need to create a fraction and convert it to a whole number
5. 6/30 = 1/5 (multiply numerator and denominator by 20 to get 100 as the denominator). 20/100 = 20 times out of 100 spins
6. 5/30 = 1/6, (convert to a decimal) 0.167 = 0.17 since this turns into the fraction 17/100, there are 17 times after 100 spins
Answer:
1. increase in population and increase in jobless = causation
2. increase in snow fall and increase in personal income = no relationship
3. increase in literacy rate and increase in doctors = correlation
Step-by-step explanation:
1. people without jobs is CAUSED by a population spike
2. weather cannot affect your paycheck, so no relationship
3. more doctors means they scored higher on literacy, but it's iffy so correlation
Hope this helps :)
Using the z-distribution, it is found that the smallest sample size required is given by:
B) 7 vehicles.
<h3>What is the margin of error for a z-distribution confidence interval?</h3>
It is given by:
In which:
is the population standard deviation.
In this problem, we have a 90% confidence level, hence
, z is the value of Z that has a p-value of 
, so the critical value is z = 1.645.
The margin of error and the population standard deviation are given by, respectively:
.
Then, we solve for n to find the needed sample size.
Rounding up, 7 vehicles have to be sampled, hence option B is correct.
More can be learned about the z-distribution at brainly.com/question/25890103
She will use 13.5 Inches of ribbon for the bow
