The stem and leaf display below represents the scores of a group of students in a test. The stem represents the tens part while the leaf represents the units part. Use it
to answer the questions that follow.

Stem. Leaves
2 4 1
3 3 2 3
4 1 5 4 7 5
5 2 3 8 1
6 2 3 1
7 4 3

(i) Construct a grouped frequency table using the class intervals 20 - 29, 30–39,
etc...
(ii) Draw a histogram for the distribution.
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The quadratic function h(t) = -16.1t^2 + 150 models a balls height, in feet, over time, in seconds, after its dropped from a 15 story building. from what height in feet was the ball dropped?

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]

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?