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12.6 ft³
Step-by-step explanation:
h = 1 ft
r = 2 ft
π = 3.14
V of cylinder = πr²h
= 3.14 × 2² × 1
= 12.56
= 12.6 ft³
Hope it helps ⚜
Answer:
a
The null hypothesis is 
The alternative hypothesis 
b
The 95% confidence interval is 
Step-by-step explanation:
From the question the we are told that
The population mean is 
The sample size is n = 30
The sample mean is 
The standard deviation is 
Given that the confidence level is
then the level of significance is mathematically represented as


=> 
Next we obtain the critical value of
from the normal distribution table
The value is 
Generally the margin of error is mathematically represented as

substituting values


The 95% confidence interval confidence interval is mathematically represented as

substituting values


Answer:
2
Step-by-step explanation:
3x5 is 15 and 4x5 is 20
Answer:
Temperature in °F = 160°F
Step-by-step explanation:
Temperature can be defined as a measure of the degree of coldness or hotness of a physical object. It is measured with a thermometer and its units are Celsius (°C), Kelvin (K) and Fahrenheit (°F).
Given the following data;
Temperature in Celsius = 25°C
To convert celsius to fahrenheit, we would use the following formula;
Temperature in °F = (5 x temperature in °C + 32°)
Substituting into the formula, we have;
Temperature in °F = (5 x 25 + 32°)
Temperature in °F = (125 + 32°)
Temperature in °F = 157
To the nearest 10°F;
Temperature in °F = 160°F