Answer: 2 1/3
Step-by-step explanation:
Answer:
Point R(2,7) has coordinates of (x, y), where x = 2 and y = 7, so
- Across the y-axis = 7
- Across the x-axis = 2
Answer:
Step-by-step explanation:
- Total money = $96
- Contribution ratio = 3 : 5 : 8
<u>Contribution by each:</u>
- 3x + 5x + 8x = 96
- 16x = 96
- x = 6
- 3x → $18, 5x → $30, 8x → $48
<u>Equal contribution is:</u>
<u>Returned by first and second person:</u>
- $32 - $18 = $14
- $32 - $30 = $2
<u>Ratio of returned amount:</u>
Answer:
The correct option is (D).
Step-by-step explanation:
To construct the (1 - <em>α</em>)% confidence interval for population proportion the distribution of proportions must be approximated by the normal distribution.
A Normal approximation to binomial can be applied to approximate the distribution of proportion <em>p</em>, if the following conditions are satisfied:
In this case <em>p</em> is defined as the proportions of students who ride a bike to campus.
A sample of <em>n</em> = 125 students are selected. Of these 125 students <em>X</em> = 6 ride a bike to campus.
Compute the sample proportion as follows:

Check whether the conditions of Normal approximation are satisfied:

Since
, the Normal approximation to Binomial cannot be applied.
Thus, the confidence interval cannot be used to estimate the proportion of all students who ride a bike to campus.
Thus, the correct option is (D).
Answer: 8 girls
Step-by-step explanation:
Difference between boys and girls = 7 - 1
= 6 units
6 units = 48
1 unit (girls) = 8
<em>I hope this helped! :)</em>