Answer: F(x) > 0 in the ranges (-0.7, 0.76) and (0.76, ∞).
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Answer: Fourteen students are not enrolled in any foreign languages.
Step-by-step explanation: Begin with the total student count and subtract the number enrolled in each language class. This yields 19 for French, 12 for Spanish, and 7 for those taking both. Summing these numbers gives 38. Next, repeat this process, subtracting each category from 30 to find how many students are not participating in either language. You would end up with 11 for French, 18 for Spanish, and 23 for both. Adding these values results in 52. Finally, subtract 38 from 52 to arrive at the final result of 14.
Start by letting x represent the number of Sam's pencils. Then Sari has 3x (since she has three times as many)
Together they total 28 pencils:
x + 3x = 28
4x = 28 /:4 (divide both sides by 4)
x = 7
So Sam has 7 pencils.
Sari, having three times as many, has 7 * 3 = 21.[[TAG_8]]
Answer:
They anticipate the following ratio:
x/20 = 160/8, where x represents the population
Next
x = 20×160/8 = 400
Provided the details regarding the sale prices of baseball cards from the 1960s:
It's established that they display a
skewed-right distribution
The average sale price is $5.25
The standard deviation measures $2.80.
If we draw a random sample of 100 cards
from that era:
The distribution will be Normal
The mean will remain at $5.25
The standard error turns out to be $0.28
