Answer:
Answer: D
Step-by-step explanation:
Answer:
a = - 100
Step-by-step explanation:
Given
= - 10
Multiply both sides by 10 to clear the fraction
a = 10 × - 10 = - 100
Answer:
5ft
Step-by-step explanation:
...........................
10/16 = 5/8
An equivalent fraction is:
20/32
Answer:
The sample size is 4
Step-by-step explanation:
Null hypothesis: The mean is 2
Alternate hypothesis: The mean is less than 2
Mean = 3
sd = sqrt(variance) = sqrt(4) = 2
At 95% confidence level, t-value is 1.960
Assuming the lower bound of the mean is 1.04
Lower bound = mean - (t×sd/√n)
1.04 = 3 - (1.96×2/√n)
3.92/√n = 3 - 1.04
3.92/√n = 1.96
√n = 3.92/1.96
√n = 2
n = 2^2
n = 4
