Answer:

Step-by-step explanation:

Given: Mean temperature μ = 24 , standard deviation σ =4
The lower and upper bound for temperature within one standard deviation of the mean is given by,
Lower bound = μ - σ = 24 - 4
Lower bound = 20
Upper bound = μ + σ = 24+ 4
Upper bound = 28
The temperature value between (20, 28) is said to be within one standard deviation of the mean.
From given option 27° lies in between (20°, 28°), hence 27° is the temperature value that is within one standard deviation of mean.
Answer:
No.
Step-by-step explanation:<u> If we look at the first conveyor belt, the rate is 12ft in 3 seconds, or 4 feet a second. The second conveyor belt moves at 21 feet in 7 seconds, or 3 feet a second. Since the two values are unequal, we can conclude it is not a proportional relationship. </u>
Bianca used
of tuna salad.
Step-by-step explanation:
Given,
Amount of Salad available = 
Amount used by Bianca = 
Amount used by Bianca = 
Amount used by Bianca = 
Bianca used
of tuna salad.
Keywords: fraction, multiplication
Learn more about fractions at:
#LearnwithBrainly
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