What is the median of the scores in this stem-and-leaf plot?

75
76
77
78

Stem and leaf plot titled science test scores. Vertical line separates each stem number from its first leaf number. First row. Stem 5. Leaves 8, 9. Second row. Stem 6. Leaves 4, 4, 6, 8. Third row. Stem 7. Leaves 2, 4, 5, 6, 8, 9. Fourth row. Stem 8. Leaves 3, 4, 6, 7, 8. Fifth row. Stem 9. Leaves 1, 3, 3, 5. Key. 7 vertical line 5 means 75.

plz dont guess i need to pass this or i will fail

In the diagram below, dab and dac are adjacent angles. if mdac = 25°, what is mdab in degrees? what is mbac in degrees?

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?