Yes to both, and for future help, if you find a common denominator(the bottom one) by multiplication and one is higher, boom you have your answer.
She sold 36 White shirts. Its 48 shirts in total so it would be a ratio of 1/4. 1=Blue shirts and 4=total shirts sold. divide 48 by <span>¼.soyou get 12 shirts. the blue shirts of course.48-12 =36. Another way to check your work is 12 x 3 = 36.
</span>
Answer:
............................................
<span>The sample proportion of the the students that took fewer than the mean number of electives is given by the number of people who took less that the mean number of electives (i.e. 7.63) divided by the total number of students in the sample (i.e. 19).
The total number of people who took less than 7.63 electives is 10.
Therefore, the required sample proportion is 10 / 19. </span>
Answer: B. This student's test grade was 2.4 standard deviations above the mean test grade.
====================================================
Explanation:
The z score tells us how far away the raw score is from the mean. This distance is in terms of standard deviations.
- z = 1 means we're 1 standard deviation above the mean
- z = 2 means we're 2 standard deviations above the mean
and so on.
Negative z scores indicate the raw score is below the mean.
- z = -1 means we're 1 standard deviation below the mean
- z = -2 means we're 2 standard deviations below the mean
and so on. So that's why z = 2.4 indicates the students test grade was 2.4 standard deviations above the mean.
