Answer:
The confidence interval for the difference in proportions is
No. As the 95% CI include both negative and positive values, no proportion is significantly different from the other to conclude there is a difference between them.
Step-by-step explanation:
We have to construct a confidence interval for the difference of proportions.
The difference in the sample proportions is:
The estimated standard error is:
The z-value for a 95% confidence interval is z=1.96.
Then, the lower and upper bounds are:
The confidence interval for the difference in proportions is
<em>Can it be concluded that there is a difference in the proportion of drivers who wear a seat belt at all times based on age group?</em>
No. It can not be concluded that there is a difference in the proportion of drivers who wear a seat belt at all times based on age group, as the confidence interval include both positive and negative values.
This means that we are not confident that the actual difference of proportions is positive or negative. No proportion is significantly different from the other to conclude there is a difference.
Assuming the equation reads:
Add 16 to both sides:
Multiply both sides by 5 to get rid of the denominator and to get x by itself:
The value of x will be
70.
Answer:
She has 42 pieces of wood each of 1 inch of length.
Step-by-step explanation:
Amy has 42 inches piece of wood.
She has to cut an inch.
After cutting pieces of inch each she counts the pieces to be 42.
Mathematically
Total length / unit lenght = Number of pieces
42 inches/ 1 inch= 42 pieces.
She has 42 pieces of wood each of 1 inch of length.
Because minimum wage is less in state B :)
Answer:
24 square units
72 square units
96 square units
Step-by-step explanation:
In the figure attached, the complete question is shown.
One face is a rectangle with length = 12 and width = 8. Its area is: 8*12 = 96 square units
Another face is a rectangle with length = 12 and width = 10. Its area is: 10*12 = 120 square units
Another face is a rectangle with length = 12 and width = 6. Its area is: 6*12 = 72 square units
The other two faces are right triangles with base = 6 and height = 8. Their area is: (6*8)/2 = 24 square units