The graph shows the price, in dollars, of different numbers of sweet breads at Alan's store. The table shows the price, in dolla
rs, of different numbers of shortcakes at the same store.
Shortcake
Number
of Shortcake Price of Shortcake
(dollars)
5 45
10 90
15 135
20 180
How many dollars more is the price of a shortcake than the price of a sweet bread at David's store?
Shortcake
Number
of Shortcake Price of Shortcake
(dollars)
5 45
10 90
15 135
20 180
How many dollars more is the price of a shortcake than the price of a sweet bread at David's store?
1 answer:
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Answer:
The interval [32.6 cm, 45.8 cm]
Step-by-step explanation:
According with the <em>68–95–99.7 rule for the Normal distribution:</em> If is the mean of the distribution and s the standard deviation, around 68% of the data must fall in the interval
around 95% of the data must fall in the interval
around 99.7% of the data must fall in the interval
So, the range of lengths that covers almost all the data (99.7%) is the interval
[39.2 - 3*2.2, 39.2 + 3*2.2] = [32.6, 45.8]
<em>This means that if we measure the upper arm length of a male over 20 years old in the United States, the probability that the length is between 32.6 cm and 45.8 cm is 99.7%</em>