Answer:
- <u><em>The standard deviation of the distribution is 1.5ºF.</em></u>
Explanation:
The known 68-95-99.7 rule, the empirical rule, states that, in a normal distribution 68% of the data are within one standard deviation from the mean, 95% of the data are within two standard deviations from the mean, and 99.7% are within three standard deviations:
- 68% ⇒ mean ± 1 standard deviation
- 95% ⇒ mean ± 2 standard deviations
- 99.7% ⇒ mean ± 3 standard deviation.
Hence, for the<em> approximately normal distribution of the daily high temperatures</em>,<em> with mean 86º</em>, and a range of <em>83ºF to 89ºF</em> for <em>95% of the data,</em> you can write:
- 86ºF ± 2 SD ⇒ 86ºF - 2 SD = 83ºF, and
- 86ºF ± 2 SD ⇒ 86ºF + 2SD = 89 ºF
Both equations will lead to the same result:
- 86ºF - 2 SD = 83ºF ⇒ 2 SD = 86ºF - 83ºF = 3ºF
SD = 3ºF / 2 = 1.5ºF
Also:
- 86ºF + 2SD = 89ºF ⇒ 2 SD = 89ºF - 86ºF = 3ºF
SD = 3ºF / 2 = 1.5ºF
Therefore, the standard deviation of the distribution is 1.5ºF.
Answer:-1.83
Explanation:
1 13
-7.34
<h3><u>subtract-5.51</u></h3><h3> 1.83 </h3>
Answer:
Bart can travel 130 miles in 2.5 hours with this rate
Explanation:
Bart travels 52 miles per hour
For 2.5 hours first find for two hours and then for half hour. finally add this two and half hour to get for 2.5 hours.
2.5 hours=2 hours + half hour
2 hours= 1 hour × 2
= 52 miles × 2 = 104 miles
half hour= 1 hour ÷ 2
=52 miles ÷ 2 = 26 miles
2.5 hours = 104 miles + 26 miles
= 130 miles
It because it heavy rember there nothing that holds the fat
Answer:
No offense but some guys sound desperate some sound charming for the girls some sound really angelic whereas some sound annoying I don't know how else to describe Americans I don't mean anything in a bad way
