Answer:
And the best option would be:
D. (0.191 to 0.249)
Step-by-step explanation:
For this case we know that the mean is:
And the standard error is given by:
We want to construct a 68% confidence interval so then the significance level would be :
and 
. The confidence interval is given by:
Now we can find the critical value using the normal standard distribution and we got looking for a quantile who accumulate 0.16 of the area on each tail and we got:
And replacing we got:
And the best option would be:
D. (0.191 to 0.249)
Answer:
no
Step-by-step explanation:
We can find this by doing 16/2
This is equal to 8
The answer is you need 8 teaspoons of vinegar for 16 tsp of mayonnaise
The answer is 15x + 15
Each person needs to pay x dollars per hour, and also 3 dollars for a helmet
Let us convert this into a pseudo-expression:
1 person = (x dollars) x (y hours) + 3 dollars
Now, it says that there are 5 people, so we need to multiply both sides by 5
5 people = 5 x (x dollars) x (yhours) + 3 x 5 dollars
Furthermore, it says that each person wants to go horseback riding for 3 hours:
5 people = 5(x dollars) x (3 hours) + 15 dollars
Now, we just need to convert this into an expression
5 people = 5(x)(3) + 15
5 people = 15x+15
They want the expression for cost, so we just need to give them
15x + 15
